List of Skin Diseases and Related Skin Disorders


Skin Diseases and Related Disorders
Household Remedies for Itching—Chafing and Chapping—Hives, Cold Sores and Pimples—Ringworms, Warts and Corns—Eczema and other Inflammatory Disorders.
No attempt will be made to give an extended account of  a list of skin diseases, but a few of the commoner skind disorders which can be readily recognized by the layman will be noticed. Although these cutaneous troubles are often of so trivial a nature that a physician's assistance is unsought, yet the annoyance is often sufficient to make it worth while for the patient to inform himself about the ailment. Then the affections are so frequent that they may occur where it is impossible to procure medical aid. Whenever an eruption of the skin is accompanied by fever, sore throat, headache, pains in back and limbs, vomiting, or general illness, one of the serious, contagious, eruptive diseases should be suspected, particularly in children, and the patient must be removed from contact with others, kept in isolation, and a physician immediately summoned.

ITCHING (Pruritus).—Itching is not a distinct disease by itself, but a symptom or sign of other skin
  general disorders. Occasionally it must be treated as if it were a separate disease, as when it occurs about the entrance to the bowel (anus), or to the external female sexual parts (vulva), or attacks the skin generally, and is not accompanied by any skin eruption except that caused by scratching, and the cause be unascertainable. Itching, without apparent cause, may be due to parasites, as lice and fleas, and this must always be kept in mind; although debilitated states of the body and certain diseases, as gout and diabetes, are sometimes the source. Commonly, itching is caused by one of the many recognized skin diseases, and is accompanied by an eruption characteristic of the particular disorder existing, and special treatment by an expert, directed to remedy this condition, is the only reasonable way to relieve the itching and cure the trouble.  Read About Pulex Irritanx 
It may not, however, be improper to suggest means to relieve such a source of suffering as is itching, although unscientific, with the clear understanding that a cure cannot always be expected, but relief may be obtained until proper medical advice can be secured. The treatment to be given will be appropriate for itching due to any cause, with or without existing eruption on the skin, unless otherwise specified. If one remedy is unsuccessful, try others.
For itching afflicting a considerable portion of the skin, baths are peculiarly effective. Cold shower baths twice daily, or swimming in cold water at the proper  time of year, may be tried, but tepid or lukewarm baths are generally more useful. The addition of saleratus or baking soda, one to two pounds to the bath, is valuable, or bran water obtained by boiling bran tied in a bag in water, and adding the resulting solution to the bath. Even more efficient is a bath made by dissolving half a cupful of boiled starch and one tablespoonful of washing or baking soda in four gallons of warm water. The tepid baths should be as prolonged as possible, without chilling the patient. The bran water, or starch water, may be put in a basin and sopped on the patient with a soft linen or cotton cloth and allowed to evaporate from the skin, without rubbing, but while the skin is still moist a powder composed of boric acid, one part, and pulverized starch, four parts, should be dusted on the itching area.
Household remedies of value include saleratus or baking soda (one teaspoonful to the pint of cold water), or equal parts of alcohol, or vinegar and water, which are used to bathe the itching parts and then permitted to dry on them. Cold solution of carbolic acid (one teaspoonful to the pint of hot water) is, perhaps, the most efficacious single remedy. But if it causes burning it must be washed off at once. Dressings wet with it must never be allowed to become dry, as then the acid becomes concentrated and gangrene may result. Calamine lotion  is also a serviceable preparation when there is redness and swelling of the skin. When the itching is confined to small areas, or due to a pimply or scaly eruption on the skin, the following ointments may be tried: a mixture of tar ointment and zinc ointment (two drams each) with four drams of cold cream, or flowers of sulphur, one part, and lard, twelve parts.

CHAFING AND CHAPPING.—Chafing occurs when two opposing skin surfaces rub together and are irritated by sweat, as in the armpits, under the breasts and beneath overlapping parts of the belly of fat people, and between the thighs and buttocks. The same result is caused by the irritation induced by discharges constantly running over the skin, as that seen in infants, due to the presence of urine and bowel discharges, and that irritation which arises from saliva when the lips are frequently licked. The latter condition of the lips is commonly called chapping, but it is proper to consider chafing and chapping together as the morbid state of the skin, and the treatment is the same for both.
Chafing occurs more often in hot weather and after violent exercise, as rowing, riding, or running, and is aggravated by the friction of clothing or of tight boots. It may, on the other hand, appear in persons who sit a great deal, owing to constant pressure and friction in one place. The parts are hot, red, and tender, and emit a disagreeable odor when secretions are retained. The skin becomes sodden by retained sweat, and may crack and bleed. The same redness and tenderness are seen in chapping of the face and lips, and cracking of the lips is frequent.
In chafing the first requisite is to remove the cause, and then thoroughly wash the part with soap and water. Then a saturated solution of boric acid in water should be applied with a soft cloth, and the parts dusted with a mixture of boric acid and powdered starch, equal parts, three times daily. If the lips are badly cracked, touching them, once daily, with a stick of silver nitrate (dipped in water) is of service.
HIVES; NETTLERASH (Urticaria).—Hives is characterized by the sudden appearance of hard round or oval lumps in the skin, from the size of a pea to that of a silver dollar, of a pinkish-white color, or white in the center and often surrounded by a red blush. The rash is accompanied by much itching, burning, or tingling, especially at night when the clothes are removed. The peculiarity of this eruption is the suddenness with which the rash appears and disappears; the itching, the whitish or red lumps, the fact that the eruption affects any part of the body and does not run together, are also characteristic. Scratching of the skin often brings out the lumps in a few minutes. The swellings may last a few minutes or hours, and suddenly disappear to reappear in some other place. The whole trouble usually continues only a few days, although at times it becomes a chronic affection.

Scratching alters the character of the eruption, and causes red, raw marks and crusts, but the ordinary swellings can be seen usually in some part of the body. Rarely, the eruption comes in the throat and leads to sudden and sometimes dangerous swelling, so that suffocation has ensued. With hives there are no fever, sore throat, backache, headache, which are common to the contagious eruptive disorders, as measles, scarlet fever, etc.
Indigestion is the most frequent cause. Certain articles of diet are almost sure to bring on an attack of hives in susceptible persons; these include shellfish, clams, lobsters, crabs, rarely oysters; also oatmeal, buckwheat cakes, acid fruits, particularly strawberries, but sometimes raspberries and peaches. Nettlerash is common in children, and may follow any local irritation of the skin caused by rough clothes, bites of mosquitoes and fleas, and the stings of jellyfish, Portuguese man-of-war, and nettles.
Treatment.—Remove any source of irritation in the digestive canal, or externally, and employ a simple diet for a few days, as bread and milk.
A dose of castor oil, one teaspoonful for children; one tablespoonful for adults, or some other cathartic is advisable. Locally we use, as domestic remedies, a saturated solution of baking soda (or saleratus) in water, or equal parts of alcohol or vinegar and water to relieve the itching. The bath containing soda and starch (p. 141) is the most useful treatment when the nettlerash is general. Calamine lotion is one of the best applications which can be employed for this disorder. It should be sopped on frequently with a soft cloth and allowed to dry on the skin.
Calamine Lotion
Zinc oxide1/4 ounce
Powdered calamine1/4    "
Limewater6 ounces
Mix and shake before applying to the skin.
If choking is threatened, give an emetic of mustard, one teaspoonful, and warm water, half a pint.
PIMPLES; BLACKHEADS (Acne).—This eruption is situated chiefly on the face, but often on the back, shoulders, and chest as well. It is a disorder which is seen mostly in young men and women at about the age of puberty. It consists of conical elevations of the skin, from a pin head to a pea in size, often reddened and tender on pressure, and having a tendency to form matter or pus, as shown by a yellow spot in the center of the pimple. After three to ten days the matter is discharged, but red elevations remain, which later become brown and disappear without scarring, except in rare cases.
"Blackheads" appear as slightly elevated black points, sometimes having a yellowish tint from which a little, thin, wormlike mass may be pressed. Pimples and blackheads are both due to inflammation about the glands of the skin which secrete oily material; the mouths of the glands become plugged with dust, thus retaining the oily secretion and causing blackheads. Then if these glands are invaded by germs producing pus, we have a pimple, which usually results in the formation of matter as described above. Constipation and indigestion favor the occurrence of pimples and blackheads; also a poor state of the blood, or anæmia.
Treatment.—Tea, coffee, tobacco, and alcohol should be avoided, together with veal, pork, fats, and cheese. The bowels must be moved daily by some proper cathartic, as cascara tablets containing two grains each of the extract. The dose is one to two tablets at night. The blackheads should be squeezed out with a watch key, or with an instrument made for the purpose, not finger nails, and pimples containing matter must be emptied after being pricked with a needle (which has been passed through a flame to kill germs on it). If there is redness of the skin and irritation associated with pimples, it is sufficient to bathe the skin with very hot water and green soap three times daily, and apply calamine lotion (see p. 145) at night. In other cases, when the skin is not sensitive, and zinc or mercury has not been used, the employment of sulphur soap and hot water at bedtime, allowing the suds to dry and remain on the face during the night, is to be recommended. An ointment consisting of half a dram of precipitated sulphur with half an ounce each of powdered starch and vaseline applied each night, and hot water used on the face three times daily are also efficacious. Sulphur lotion is better than sulphur ointment.
COLD SORE; FEVER BLISTER.—Cold sores occur usually about the lips or at the angles of the mouth, although they may appear anywhere on the face. Cold sore has a round, oval, or irregular outline, from the size of a pea to that of a quarter of a dollar, and is seen as a slightly raised patch on the skin on which is a group of very minute blisters, three to twelve in number. Cold sore may be single or multiple, and near together or widely separated on the face. Having first the appearance of a red patch, it later becomes covered with a brown crust from the drying of the contents of the tiny blisters. Cold sore often gives rise to burning, itching, or tingling, the disfigurement usually causing more annoyance, however, than the pain. The duration of the trouble is from four to twelve days.
Cold sores are commonly induced by indigestion and fevers, and also are occasioned by local irritation of any sort, as from nasal discharge accompanying cold in the head (from which the name is derived), by the irritation produced by a pipestem or cigar, and by rubbing the skin.
Treatment.—Picking and scratching are very harmful, and cigar or pipe smoking must be stopped. Painting the sore with collodion, by means of a camel's-hair brush, is poor treatment in the early stages. Better use spirits of camphor, and afterwards, if there is much itching or burning, sopping the eruption with calamine lotion (p. 145) will relieve the discomfort.
PRICKLY HEAT (Miliaria).—This is a common eruption of adults in hot weather, and very frequently attacks children. It consists of fine, pointed, red rash, or minute blisters, and occurs on parts of the body covered by clothing, more often on the chest. The eruption is caused by much sweating, leading to congestion and swelling of the sweat glands. Burning, stinging, and itching accompany the disorder. The condition must be distinguished from the contagious skin eruptions. In the latter there are fever, sore throat, backache, headache, and general sickness, while in prickly heat there is no general disturbance of the system, or fever, unless the eruption comes out in the course of fevers, when it is of no significance except as one of the symptoms of fever.
Treatment.—The treatment of prickly heat, occurring in hot weather, consists in avoiding heat as much as possible and sponging the surface with cold water, and then dusting it with some simple powder, as starch or flour, or better, borated talcum. To relieve the itching, sponging with limewater or a saturated solution of baking soda (as much as will dissolve) in water, or bran baths, made by tying one pound of bran in a towel which is allowed to soak in the bath, are all good remedies.
RINGWORM OF THE BODY; RINGWORM OF THE SCALP.—This skin disease is caused by a vegetable fungus and not by a worm as the name suggests. The disease on the body and scalp is caused by the same parasite, but ringworm of the body may attack adults as well as children, and is readily cured; ringworm of the scalp is a disease confined to children, and is difficult of cure. Ringworm is contagious and may be acquired from children with the disease, and therefore patients suffering from it should not be sent to school, and should wear a skull cap and have brush, comb, towels, and wash cloths reserved for their personal use alone. Children frequently contract the disease from fondling and handling cats and dogs.
Symptoms.—On the body, ringworm attacks the face, neck, and hands. It appears first as small, red, scaly spots which may spread into a circular patch as large as a dollar with a red ring of small, scaly pimples on the outside, while the center exhibits healthy skin, or sometimes is red and thickened. There may be several patches of ringworm near each other and they may run together, or there may be only one patch of the disease. Ringworm of the scalp occurs as a circular, scaly patch of a dusty-gray or pale-red color on which there are stubs of broken hairs pointing in different directions, and readily pulled out. The disease in this locality is very resistant to treatment. There are no crusts or itching as in eczema.

Treatment.
—The application of pure tincture of iodine or carbolic acid to the spots with a camel's-hair brush, on one or two occasions, will usually cure ringworm on the skin. On the scalp the hairs should be pulled out of the patch of ringworm, and each day it should be washed with soap and water and a solution of boric acid (as much acid as the water can dissolve), destroying the cloth used for washing. The following ointment is then applied: sulphur, one part; tar, two parts; and lard, eight parts. It is desirable to secure the services of a physician in this disease, in which various remedies may have to be tried to secure recovery. If untreated, ringworm is likely to last indefinitely.
FRECKLES, TAN, AND OTHER DISCOLORATIONS OF THE SKIN.—Freckles appear as small, yellowish-brown spots on the face, arms, and hands, following exposure to the sun in summer, and generally fading away almost completely in winter. However, sometimes they do not disappear in winter, and do occur on parts of the body covered by clothing. Freckles are commonly seen in red-haired persons, rarely in brunettes, and never on the newborn. Their removal is accomplished by the employment of agents which cause a flaking off of the superficial layer of discolored skin, but after a few weeks the discolorations are apt to return. Large, brown spots of discoloration appearing on the face are observed more often in women, and are due to disorder of digestive organs of the sexual organs or to pregnancy; they also occur in persons afflicted with exhausting diseases. Tan, freckles, and discolorations of the skin generally are benefited by the same remedies.
Treatment.—Prevention of tan and freckles is secured through nonexposure of the unprotected skin to the sun, though it is doubtful whether the end gained is worth the sacrifice, if carried so far as to the avoidance of the open air and sunlight whenever possible.
Boric acid (sixteen grains to the ounce of water) is an absolutely harmless and serviceable agent for the removal of skin pigmentations. The skin may be freely bathed with it night and morning. Corrosive sublimate is the most effective remedy, but is exceedingly poisonous if swallowed accidentally, and must be kept out of children's way, and should not be applied over any large or raw surface of skin or on any mucous membrane. Its application is inadvisable as soon as any irritation of the skin appears from its use. The following preparation containing it is to be painted on the skin with a camel's-hair brush, night and morning:
Poisonous Sublimate Solution
Corrosive sublimate7 grains
Alcohol11/2 ounces
Glycerin11/2    "
Oil of lavender10 drops
Mix.

The following lotion is also efficacious:
Zinc oxide30 grains
Powdered starch30    "
Kaolin60    "
Glycerin2 drams
Rose water2 ounces
Mix.
Directions.—Shake and paint on spots, and allow the preparation to dry; wash it off before each fresh application.
It is best to use only cold water, rarely soap, on the healthy skin of the face. Warm water favors relaxation of the skin and formation of wrinkles.
IVY POISON.—The poison ivy (Rhus toxicodendron), poison sumach (Rhus venenata), and poison oak (Rhus diversiloba of the Pacific Coast, U. S. A.) cause inflammation of the skin in certain persons who touch either one of these plants, or in some cases even if approaching within a short distance of them. The plants contain a poisonous oil, and the pollen blown from them by the wind may thus convey enough of this oil to poison susceptible individuals who are even at a considerable distance. Trouble begins within four to five hours, or in as many days after exposure to the plants.
The skin of the hands becomes red, swollen, painful, and itching. Soon little blisters form, and scratching breaks them open so that the parts are moist and then become covered with crusts. The poison is conveyed by the hands to the face and, in men, to the sexual organs, so that these parts soon partake of the same trouble. The face and head may become so swollen that the patient is almost unrecognizable. There is a common belief that ivy poison recurs at about the same time each year, but this is not so except in case of new exposures. Different eruptions on the same parts often follow ivy poisoning, however.
Treatment.—A thorough washing with soap, especially green soap, will remove much of the poison and after effects. Saleratus or baking soda (a heaping tablespoonful of either to the pint of cold water) may be used to relieve the itching, but ordinary "lead and opium wash" is the best household remedy. Forty minims of laudanum and four grains of sugar of lead dissolved in a pint of water form the wash. The affected parts should be kept continually wet with it. Aristol in powder, thoroughly rubbed in, is almost a specific.
WARTS.—Warts are flattened or rounded outgrowths from the outer and middle layers of the skin, varying in size from a pin head to half an inch in diameter. There are several varieties.
Seed Warts.—These have numerous, little, fleshy projections over their surface, which are enlarged normal structures (papillæ) of the middle layer of the skin, together with the thickened, outer, horny layer.
Threadlike Warts.—These are seen along the edge of the nails, on the face, neck, eyelids, and ears.[Pg 154] They are formed by the great prolongation and growth of the projections, or papillæ of the middle layer of the skin just described.
Flat Warts, raised but slightly above the surface are more common in old people.
Moist Warts occur where they are softened by secretions of the body, as about the sexual organs (in connection with diseases of the same), and about the anus (or opening of the bowel). They are of a white, pink, or red color, and consist of numerous, little, fleshy projections, usually covered with a foul-smelling secretion.
Warts most commonly appear on the hands of children, but may appear on any part of the body and at all ages. They may disappear quickly or remain indefinitely. They are not communicable from one person to another.
Treatment.—Warts may be removed by painting them frequently with the fresh juice of the milkweed, or with acetic acid or tincture of iodine. These remedies are all harmless, but somewhat slow and not always effective. Application, morning and evening, of a saturated solution of "washing soda" (impure bicarbonate of potash) will often remove a wart.
CORNS.—Corns are local, cone-shaped thickenings of the outer layer of the skin of the feet, due to pressure and friction of the shoes, or opposed surfaces of skin between the toes. They are not in themselves sensitive, but pain follows pressure upon them, as they[Pg 155] act as foreign bodies in bearing down upon the sensitive lower layers of the skin. Continued irritation often leads to inflammation of the skin around and beneath the corn with the formation of pus. Ordinarily, corns are tough, yellowish, horny masses, but, when moistened by sweat between the toes, they are white, and are called "soft corns."
Treatment.—Comfortable shoes are the first requisite; well-fitting and neither tight nor loose. Pressure may be taken off the corns by surrounding them with felt rings or corn plaster. To remove the corn the foot should be soaked for a long time in warm water, in which is dissolved washing soda, and then the surface of the corn is gently scraped off with a clean, sharp knife. Another useful method consists in painting the corn, night and morning for five days, with the following formula, when both the coating and corn will come off on soaking the same for some time in warm water:
Salicylic acid30 grains
Tincture of iodine10 drops
Extract of Cannabis Indica10 grains
Collodion4 drams
Mix.
When the tissues about the corn become inflamed the patient must rest with the foot elevated and wrapped in a thick layer of absorbent cotton saturated with a hot solution of corrosive sublimate (one tablet to the pint of water) and covered with oil silk or rubber cloth. Pus must be let out with a knife which has been laid in boiling water.
If corns are removed by the knife the foot should be previously made absolutely clean, the knife boiled, and the paring not carried to the extent of drawing blood. The too-close removal of a corn may lead to infection of the wounded tissues with germs, and in old people, and those with feeble circulation, gangrene or erysipelas may result. Soft corns are treated by removal of the surface layer, by soaking in washing soda and hot water and scraping as above stated, and then the corn should be dusted with a mixture of boric acid and zinc oxide, equal parts, and the toes kept apart by pads of absorbent cotton.
CALLUS AND CRACKS OF THE SKIN.—Callus consists of round or irregular, flattened, yellowish thickenings of the upper or horny layer of the skin. The skin becomes hypertrophied and resembles a thick, horny layer, caused by intermittent pressure of tools, shoes, etc. The whole palm of the hand or soles of the feet may be the seats of a continuous callus. Callus is not harmful, except in leading to cracks of the skin near the bend of joints, and, rarely, in causing irritation, heat, pain, and even the formation of pus in the skin beneath. Callus usually disappears when the exciting cause or pressure is removed.
Treatment.—The hands and feet should be soaked continuously in hot baths containing washing soda, and then should be covered with diachylon (or other) ointment. This may be done each night; or collodion (one ounce containing thirty grains of salicylic acid) may be painted, night and morning for several days, on the callus, and then, after soaking for some time in hot water, the surface should be scraped off with a dull knife and the process repeated as often as necessary to effect a cure. Fissure or cracks of the skin caused by callus are treated in the same manner: by prolonged soaking in hot water, paring away the edges, and applying diachylon ointment or cold cream to the part. Inflammation about callus must be cared for as recommended above for inflamed corns.
BOILS.—A boil is a circumscribed inflammatory process, caused by the entrance of pus-producing germs into the skin either through the pores (the mouths of the sweat glands) or along the shafts of the hair, and in this way invading the glands which secrete a greasy material (sebaceous glands). In either case the pus germs set up an inflammation of the sweat or sebaceous glands, and the surrounding structures of the skin, and a small, red, itching pimple results. Rarely, after a few days, the redness and swelling disappear, and the pus, if any, dries and the whole process subsides. This is called a "blind boil." But usually the boil increases in size for several days, until it may be as large as a pigeon's egg. It assumes a bright-red sharply defined, rounded shape, with a conical point, and is at first hard and then softens as pus or "matter" forms. There is severe pain of a throbbing, boring character, which is worse at night, and destroys the patient's sleep and appetite. There may be some fever. The glands in the neighborhood may be enlarged and tender, owing to some of the pus germs' escaping from the boil and lodging in the glands.
If the boil is not lanced, it reaches its full development in seven to ten days with the formation of a central "core" of dead tissue and some pus, which gives to the center of the boil a whitish or yellowish-brown appearance. The boil then breaks down spontaneously in one or more places (usually only one) and discharges some pus, and, with a little pressure, also the white, central core of dead tissue. The remaining wound closes in and heals in a week or two. Boils occur singly or in numbers, and sometimes in successive crops. When this happens it is because the pus germs from the previous boils have invaded fresh areas of skin.
Causes.—Boils are thus contagious, the pus germs being communicated to new points on the patient's skin, or to that of another person. Local irritation of the skin, from whatever cause, enables the germs to grow more readily. The existence of skin diseases, as eczema ("salt rheum"), prickly heat, and other sources of itching and scratching, is conducive to boils, as the pus germs contained in ordinary dirt are rubbed into the irritated skin. Whenever the skin is chafed by rough clothing, as about the wrists and neck by frayed collars and sweaters, etc., boils are likely to occur. Also when the face and neck are handled by barbers with dirty hands or instruments, a fruitful field is provided for their invasion. While boils are always the result of pus germs gaining entrance to the skin glands, and, therefore, strictly due to local causes, yet they are more prone to occur when the body is weakened and unable to cope with germs which might do no harm under other circumstances.
The conditions favoring the occurrence of boils are: an impoverished state of the blood, errors of diet and indigestion, overwork, dissipation, and certain diseases, as typhoid fever, diabetes, and smallpox. Boils are thought to occur more frequently in persons with rough skin and with a vigorous growth of dark hair. They may be situated on any part of the body, but certain localities are more commonly attacked, as the scalp, the eyelids, cheeks, neck, armpits, back, and buttocks. Boys and young men are generally the sufferers.
Treatment.—The importance of cleanliness cannot be overestimated in the care of boils if we keep their cause in mind. Dirty underclothes or fingers used in squeezing or otherwise handling the boil, may carry the trouble to fresh parts. Any sort of local irritation should be removed; also all articles of clothing which have come in contact with the boils should not be worn until they have been washed in boiling water. There is no single remedy of much value for the cure of boils, although pills of calcium sulphide (each one-tenth grain) are commonly prescribed by physicians, every three hours.
The most rational measure consists in removing the general causes, as noted above, if this is possible. When the patient is thin and poorly nourished, give food and cod-liver oil; and if the lips and skin are pale, iron arsenate pills (one-sixteenth grain each) are to be taken three times daily for several weeks. A boil may sometimes be arrested by painting it with tincture of iodine until the boil is almost black, or with a very heavy coating of collodion. If a boil continues to develop, notwithstanding this treatment, one should either use an ointment of vaseline containing ten per cent of boric acid spread on soft cotton over the boil, or, if the latter is very painful, resort to the frequent application of hot flaxseed poultices.
When the boil has burst, and pus is flowing out on the surrounding skin, it should be kept very clean by frequent washing with hot water and soap and the application of a solution of corrosive sublimate (one part to 1,000) made by dissolving one of the tablets, sold everywhere for surgical purposes, in a pint of warm water. This will prevent the lodgment of the pus germs in the skin and the formation of more boils. Poultices mixed with bichloride (corrosive sublimate) solution are less likely to encourage inoculation of neighboring areas.
The poultices should be stopped as soon as the pain ceases, and the boil dressed as recommended above,[ dusted with pure boric acid and covered with clean absorbent cotton and bandage. After pus has begun to form in a boil recovery will be materially hastened by the use of a knife, although this is not essential. The boil should be thoroughly cleaned, and a sharp knife, which has been boiled in water for five minutes, is inserted, point first, into the center of the boil, far enough to liberate the pus and dead tissue. By this means healing is much more rapid than by nature's unassisted methods. Pure carbolic acid, applied on the tip of a toothpick, thrust into the head of a boil, is generally curative. When many boils occur, consult a physician.
CARBUNCLE.—A carbuncle is similar to a boil in its causation and structure, but is usually a much more serious matter having a tendency to spread laterally and involve the deeper layers of the skin. It is commonly a disease of old persons, those prematurely old or debilitated, and occurs most frequently on the neck, back, or buttocks. It is particularly dangerous when attacking the back of the neck, upper lip, or abdomen.
Carbuncle often begins, with a chill and fever, as a pimple, and rapidly increases in size forming a hot, dusky red, rounded lump which may grow until it is from three to six inches in diameter. Occasionally it runs a mild course, remains small, and begins to discharge pus and dead tissue at the end of a week and heals rapidly. More commonly the pain soon becomes intense, of a burning, throbbing character, and the carbuncle continues to enlarge for a week or ten days, when it softens and breaks open at various points discharging shreds of dead tissue and pus. The skin over the whole top of the carbuncle dies and sloughs away, leaving an angry-looking excavation or crater-like ulcer. This slowly heals from the edges and bottom, so that the whole period of healing occupies from a week to two, or even six months. The danger depends largely upon blood poisoning, and also upon pain, continuous fever, and exhaustion which follow it. Sweating and fever, higher at night, are the more prominent signs of blood poisoning.
Carbuncles differ from boils in being much larger, in having rounded or flat tops instead of the conical shape of boils, in having numerous, sievelike openings, in the occurrence of death of the skin over the top of the carbuncle, and in being accompanied by intense pain and high fever.
Treatment.—Carbuncle demands the earliest incision by a skilled surgeon, as it is only by cutting it freely open, or even removing the whole carbuncle as if it were a tumor, that the best results are accomplished. However, when a surgeon cannot be obtained, the patient's strength should be sustained by feeding every two hours with beef tea, milk and raw eggs, and with wine or alcoholic liquors. Three two-grain quinine pills and ten drops of the tincture of the chloride of iron in water should be given three times daily.

The local treatment consists in applying large, hot, fresh flaxseed poultices frequently, with the removal of all dead tissue with scissors, which have been boiled in water for ten minutes. When the pain is not unbearable, dressings made by soaking thick sheets of absorbent cotton in hot solution of corrosive sublimate (1 to 1,000 as directed under Boils, p. 161) should be applied and covered by oil silk or rubber cloth and bandage. They are preferable to poultices as being better germ destroyers, but are not so comfortable. When the dead tissue comes away and the carbuncle presents a red, raw surface, it should be washed twice a day in the 1 to 1,000 corrosive-sublimate solution, dusted with pure boric acid, and covered with clean, dry absorbent cotton and bandage.
ECZEMA; SALT RHEUM; TETTER.—Eczema is really a catarrhal inflammation of the skin, with the exudate (fluid that escapes) concealed beneath the surface, or appearing on the surface after irritation has occurred. The many varieties are best classified as follows:
(1) Eczema of internal origin, including cases due to morbid agencies produced within the body, cases due to drugs, and possibly reflex cases.
(2) Eczema of external origin, including cases caused by occupation, by climate, or by seborrhea.
Eczema of internal origin almost invariably appears on both sides of the body at once, as on both cheeks, or both arms, or both thighs. Its border shades into the surrounding skin, it is dotted with papules (or heads) filled with fluid, and its surface is clean and not greasy. As it spreads, the symmetry of distribution is lost. Among the morbid agencies producing this variety of eczema are the products of indigestion. Among the drugs producing it is cod-liver oil.
Occupation eczema occurs first on exposed parts, as the hands, arms, face, and neck, in those who handle irritant dyes, sugar, formalin, etc.
Climatic eczema includes the "winter itch," common in this latitude, appearing on wrists and ankles in the form of clean, scaly patches, often ringed.
The seborrheic variety spreads from the scalp to the folds of the skin. Its borders are sharply defined, and its crusts and scales yellowish and greasy. It spreads from a center in all directions at once.
Treatment.—The treatment of eczema puzzles a physician, and only specialists in skin diseases are able easily to diagnose the subacute or chronic forms. It may appear different, and need different treatment almost from day to day, and consequently only general suggestions can be made for home management of a case of this disease.
The outlook is always good; and even in the case of weak and debilitated patients, there is excellent chance of cure.
The diet must be regulated at once. Meat should be eaten in small quantities once a day only, and none but very digestible meats should be eaten, as fowl, beef,[Pg 165] and lamb. Sugar and sweet food need be cut down only when there is indigestion with a production of gas. Fresh air and exercise are imperative. Five grains of calomel, at night, followed by one heaped tablespoonful of Rochelle salts dissolved in a full tumbler of water the next morning before breakfast, should be repeated twice a week till marked improvement is seen. Meanwhile, external treatment must be pushed.
Generally speaking, ointments must not be used on weeping or exuding surfaces; all scales and crusts must be removed from the surface; and acute patches must be soothed, chronic patches stimulated. Water is harmful and increases the trouble; but it is necessary to use it once, in cleansing the affected area, in the form of soap and water. If there are thick, adherent crusts, a poultice of boiled starch, covered with a muslin cloth, will loosen them in a night. Thickened or horny layers on the palms and soles may be covered with salicylic plaster (ten per cent strength), which is removed after two days, and the whole part soaked in warm water, when the horny layer is to be peeled off. Thickened surfaces are best treated with wood tar, in the form of oil of cade ointment, or the "pix liquida" of the drug shops mixed with twice its amount of olive oil. This should be well rubbed into the affected part.
Seborrheic eczema of the scalp and neighboring areas is best treated with a four per cent ointment of ammoniated mercury, rubbed in once a day for five days, followed by the application of a solution of resor[Pg 166]cin in water, four grains to the ounce. Weeping and exuding patches should be treated with powdered stearate of zinc, or oleate of bismuth, or aristol, either one dusted on till the area is fairly covered. When the surface begins to dry up, the following paste may be applied:
Salicylic acid5 to 15 grains
Zinc oxide2 drams
Powdered starch2 drams
Vaseline1 ounce
If weeping returns, stop the ointment and resume the powder treatment, or use the following lotion:
Zinc oleate1 dram
Magnesium carbonate1 dram
Ichthyol1/2 ounce
Lime water4 ounces
When the skin after scaling off becomes thin, all swelling having disappeared, lead plaster is of service, or diachylon ointment twenty-five per cent, made with olive oil.
An eczema of moderate extent should recover after four to six weeks' treatment, unless the soles or palms be attacked, when six or more months of treatment may be necessary.
If itching is pronounced, remove crusts and scabs after soaking with olive oil, dust borax, finely powdered on the surface. If the itching is not controlled in twenty minutes, wipe off the borax with a very oily[Pg 167] cloth (using olive oil), and then apply a little solution of carbolic acid (made by adding a half teaspoonful of carbolic acid to a pint of hot water). If this does not allay the itching, wipe it off thoroughly with the oiled cloth, and rub in the tar ointment made of equal parts of "pix liquida" and olive oil. After the itching ceases, treat as directed according to the variety existing. Itching often disappears after a good saline cathartic has acted—Rochelle salts, solution of magnesia citrate, or phosphate of soda. Scratching must be avoided. In the case of children it is prevented by putting mittens of muslin on the hands.
The best cathartic for young children is a teaspoonful of castor oil. Carbolic-acid solution must not be used on them. The folds and creases of their skin must be kept dry and powdered with borated talcum. A great point in the treatment of all eczema is to avoid the use of water, and to substitute oiling with olive oil and wiping off for the usual washing of the affected area.
BALDNESS AND DANDRUFF.—Baldness is commonly caused by seborrhea of the scalp, an affection probably due to a microbe, and consisting of an inflammation of the skin, with great increase of dandruff of a thick, greasy variety. Sometimes it appears as a thick film, not only covering the scalp, but also the forehead and back of the neck. The greasy substance should be removed with olive oil or vaseline, and the scalp treated with ointment of ammoniated mercury, four per cent strength. Shampoos with tar-soap suds should be given once in four or five weeks, and the hair should not be wet with water between the shampoos. The hair must be arranged by combing, the brush being used to smooth the surface of the hair only. Deep and repeated brushing does great damage, which is equalled only by the frequent washing some ill-advised sufferers employ. Massage of the scalp is useless to control seborrheic eczema, which is practically always present in these cases.
Tight hats are sometimes a cause of baldness. The lead used in the preparation of the "sweat leather" of hats is said to be a cause of loss of hair over the temples. When once killed, hair can rarely be made to grow again. Early treatment of seborrhea is the best preventive of baldness.
The baldness occurring during an attack of syphilis, when the hair falls out in round patches, is treated and often relieved by antisyphilitic remedies 

Pulex Irritans Definition, Pulex Irritans Treatment and Symptoms (Synonym: Common Flea.)


Pulex Irritans.

(Synonym: Common Flea.)

Describe the cutaneous disturbance produced by the pulex irritans.
The cutaneous disturbance produced by pulex irrtans consists of an erythematous spot with a minute central hemorrhagic point. In irritable skin, a wheal-like lesion may result.

Pulex Irritans Treatment


Treatment for pulex irritans consists of applications of camphor or ammonia-water; carbolic acid and thymol lotions are also useful.

Host spectrum for  Pulex Irritans
Humans, canids, felids, pigs, badgers, and rats may all become infested.

Geographic distribution of  Pulex Irritans
 Pulex irritans is found worldwide.

Free games for your children or Kids Enjoy Top Free Educational games for children



Today I will like to put up a collection of free games for children.
I will not really list all today but I will try as much as possible to update this post in no distance time.  Yes children are lovers of games.  So it is not surprising to see kids who have access to a computer and internet connection searching for "free games for children".

Free games for your children or Kids Enjoy Top Free Educational games for children

For you kids looking for free games, below are a collection of some games which I hope most of you kids will love.


1. GCompris Educational Software/Game
 GCompris is an educational software suite comprising of numerous activities for children aged 2 to 10. Some of the activities are game orientated, but nonetheless still educational.
You can download Gcompris online at http://sourceforge.net/projects/gcompris/ 
Please let me know about these free games for kids





Next article will be on the benefits of Games to kids.  You will see reason why you should allow your kids to play computer games.

How to Buy, Sell or Fund Liberty Reserve in Nigeria


How to Buy, Sell or Fund Liberty Reserve in Nigeria

Today, I was faced with the task of selling my liberty reserve in Nigeria.

The other day, I was saddled with the task of buying/funding my liberty reserve account.  I was really frustrated with the time I have to spend just to fund my account at liberty reserve.  This is one of the problems facing most Nigerians when it comes to doing internet business.

How can one make money online when he does not have an effective payment system.

By effective payment system, I mean a system of payment in which one should be able to fund and withdraw money from his account very easily. 

When you have to waste time and pass through stress just to fund an account with a payment system like liberty reserve, then the system is not effective.

It is high time Nigerians develop an effective payment system like PayPal.  This will go a long way in enhancing internet business in Nigeria

It is only when we have effective payment system that one can comfortable make money online with his personal computer.  For now, if legally owing an effective payment system like PayPal in Nigeria remains a nightmare, then it will still be a nightmare for one do conduct successful internet business here in Nigeria.

It is time we rise up to expectation and have our own indigenous payment system rather than depending on that of the other countries.

Anyway back to the subject matter.

How do you Get, Fund, Buy or Sell Your Liberty in Nigeria

The answer is very simple!

If you want to fund your liberty reserve or sell your liberty reserve, you can use this website http://goldnairaexchange.com/

Unlocking MTN 3G Modem, ZTE Modem, Huawei & Hsdpa Modem with free modem unlocking software


Unlocking Your MTN 3G Modem, ZTE Modem, Huawei & Hsdpa Modem with free modem unlocking software
It is really frustrating to buy a locked modem from network providers like MTN, GLo, AIRTEL, ETISALat Nigeria.  I wonder why big companies will prefer to lock there modem.

Well the reason is not far fetched. These mobile communication companies want to enjoy monopoly.
Thanks to free unlocking modem softwares.  With such software, you will be able to unlock your modem and use all the network within your reach.

Now I will show you the hidden software with which I use to unlock modem for people.
It does not just end unlocking your MTN 3G Modem, ZTE Modem, Huawei or Hsdpa Modem, you can even make money unlcoking other peoples's MTN 3G Modem, ZTE Modem, Huawei & Hsdpa Modem.


For many, this article on "Unlocking Your MTN 3G Modem, ZTE Modem, Huawei & Hsdpa Modem with free modem unlocking software" is a hidden treassure.

Really, this article is a hidden tressure because I know some guys that collect 5 000 naira just to unlock a modem.  be it huawei or zte modem

Now here are the hidden treasures

Visit http://www.3gmodem.com.hk/ to find one of tricks of how you can unlock your internet modem

I will release my last free hidden treasure / link to the software for unlocking your Modem in the next post.  So stay tuned


How to Send Free SMS text messages in Nigeria via SMS text Website


How to Send Free SMS text messages in Nigeria via SMS Website

If you live in Nigeria, and you do not want to use your phone to send SMS, then you have a second option of sending Free SMS with your computer and an internet connection.
For those of you who want to spend some money or for those of you who do not like free sms, you can use paid sms at http://www.customizesms.com/ to send your sms to your family and friends.

Now, Here comes You Great  Free  SMS Text Message Tool

For those of you who like free stuffs, here is the big deal when it comes to sending fress SMS via the internet.

If you feel like sending or rather want to send fress sms via your internet conncetion in Nigeria, you can use MJOY http://www.mjoy.com/

With MJOY, you can send fress text messages from the comfort of your laptop connected to the internet.


Sending Free SMS with MJoy is very easy.  All you neet is to visit http://www.mjoy.com/ and register for an account.  After which you do mobile verification.  Then just follow the instructions and you will be sending your first Free SMS Text message any moment from now

Enjoy your free sms text message while it lasts.  Notting good or free last forever.


Tips and How to Get Scholarship in Nigeria, Ghana

 How to Get Scholarships - How to Get Scholarships in Nigeria, Ghana, Togo, ...
Scholarships are tricky things. Everyone wants one. Few people get them. Apparently, there are millions out there that go unused on an annual basis. Because scholarships differ from loans in that they are free money, they are coveted beautiful things. They are also brilliant resume boosters and look fantastic on any resume.
Now, there are so many types of scholarships, it helps to be abreast of the types, time ranges, amounts, and places to find them. Some high schools give away scholarships prior to attending college. Some scholarships are merit based, others need based, others interest based, other cultural based. The list goes on.
The best way to begin seeking scholarships is to do your research. Every college and university will have a dowry with various scholarships. Usually they will be listed on the school's website; however, you can always inquire as to their prevalence. When you learn about them, you can find out how much, many, and reasons behind them. Essentially, scholarships don't usually just get handed to you (although some lucky people do find this fortuitous world). You must do your research.
Here are some types of scholarships.

  1. Merit Scholarships - Scholarships typically revolve around this type of award. People who excel in academics are awarded a scholarship on the basis of their overall academic achievement. This may come in the form of top GPA, excellent SAT scores, and so on. These are highly competitive and may come in various forms.
  2. Need-Based Scholarships - This type of scholarship is given purely on financial means. They are designed to fund the less-fortunate students in their academic pursuits. Scholarship committees look at various reasons for this hardship: Parents' income, number of siblings in school simultaneously, expenses, cost of living, etc.
  3. Athletic Scholarships - Scholarships are popularly given to star athletes by universities to recruit them for the athletic teams. Many athletes complete their education free of charge, but also pay the price of overworked team sports. Usually full-scholarship athletes are recruited by "scouts" while in high school. You don't usually pursue this type of scholarship; it is given to you.
  4. School-Based Individual Scholarships - Every school offers specific scholarships relevant to specifics from the university: donors, individual name scholarships, personal scholarships, and so on. Sometimes you have to apply directly to the scholarship, and other times, just by being accepted, you are placed in the bowl for possible scholarship awards.
  5. Full/Partial Scholarship - Many people look at scholarships as a whole and think that they sometimes cover everything. If you are lucky enough to receive a full scholarship, then yes, they cover living, books, and tuition. However, many scholarships are partial, meaning they may cover simply living, simply books, or part of the tuition. If you are awarded any type of scholarship, take it and run! They are prized, wonderful gifts, and you should feel honored to receive one.
While several scholarships are school based, others are based on almost every other personal element that can exist. Several websites and books are designed purely for the existence of finding scholarships. Here are some websites and books that serve as search agents and listings of all the scholarships that exist. If you try hard enough, you are likely to find at least one or two that match your interests and qualifications. It takes much patience and time, but you are bound to find a scholarship for you.
Website: www.escholar.info
Books:

  • How To Go To College Almost For Free by Ben Kaplan 

Winning Hearts Leads to Winning College Scholarships

 A mother was at home, and there was a knock at the door. She opened the door and was surprised to see a person standing there with a bouquet of flowers. It wasn’t a holiday, birthday, or anniversary. The flowers were a total surprise!

They turned a rather ordinary day into an exceptional one to be remembered for weeks to come.

Little remembrances are cherished. And, the person who sends them is not forgotten. We all like to be remembered in unusual and caring ways.

The teachers and staffs of high schools aren’t any different and yet, it does not happen very often for them. Kind words are good, but a thoughtful note is better, and a small gift is best.

A teacher remarked that she once had a student who had many physical issues. It created some unusual classroom problems in her chemistry class. The mother of that student knew this
and constantly thanked the teacher with complimentary notes and small gifts throughout the school year not just on holidays. It made the teacher feel appreciated, needed, and
respected.

A typical high school has administrators, teachers, and a support staff. Who will be affecting your student? Who will your student have for classroom teachers in the coming year?

Find out who they are. You will want to know the
receptionist at the main desk. Don’t forget the secretary in the guidance office. Who cooks the lunches, sweeps the floors, and empties the wastebaskets? Bus drivers often have a particularly difficult situation. Also remember the principal and vice-principal. Many times all of these people are only remembered when something negative happens. Letting them know that you recognize and appreciate the jobs they’re
performing, for the benefit of your child, will make it easier for your student.

Favors and kindnesses are always returned. Find out when those birthdays and anniversaries happen and remember them with a card, note or even cookies. And, in those few short years, when college scholarship time rolls around, people
will be happy to write glowing testimonials for your student.

Remember this: everything in life is a decision, make the right ones today for your college scholarship success.

 

 

Nigeria Court Orders Vice President to Assume Executive Powers

A Nigeria federal court has ordered Vice President Goodluck Jonathan to take over presidential duties in the absence of President Umaru Yar'Adua.  The court announcement comes a day after thousands of protesters marched through the streets of the capital city demanding the vice president assume executive powers.

The ruling was in response to one of at least four separate suits filed by groups and individuals in Nigeria seeking to temporarily transfer executive powers to Vice President Goodluck Jonathan, and provide the country with interim leadership.

The Nigerian constitution requires the president to write to the National Assembly vesting the vice president with the powers to act as president.  President Yar'Adua did not transfer powers to his deputy before traveling to Saudi Arabia for medical treatment in November.

The court accepted the argument that his continued absence and the power vacuum it has created could be a source of instability in Africa's most populous nation and ordered the vice president to immediately assume the position of acting president for the period of Mr.Yar'Adua's incapacitation.

A Nigerian lawyer based in Abuja, Maxi Okwu, welcomed the court decision.

"That is a welcomed relief.  At least let somebody be in charge, somebody we can hold accountable.  For the past 50 days this nation has been without a leader.  You cannot rule a country by proxy.  Now Goodluck has enough reasons to take over without appearing to disloyal.  He should step in immediately," said Okwu.

The government is facing growing pressure over a perceived lack of leadership, given the continued absence of President Yar'Adua and persistent rumors over his state of health.

The Nigeria Bar Association, a prominent human-rights lawyer and two former lawmakers have all filed a legal challenge against the government, accusing Mr.Yar'Adua of breaching the constitution by staying in power.
Sourc: Voa News

Update on Haiti's Worst Earthquake

Untold Numbers Still Trapped in Rubble of Worst Quake in Haitian History

As untold numbers lay dead and or buried in the rubble of Haiti's worst earthquake ever, the impoverished nation is calling on the world to help.

It was a nation already vulnerable, the poorest in the Western hemisphere, with a history of lax construction. The International Red Cross says the 7.0 earthquake in Haiti leaves close to a third of the population in need of emergency aid. Thousands are feared dead.
"What I know is that Port-au-Prince has been destroyed beginning with the palace, which is a very solid building.  If the place itself is hit that hard imagine what happens to the flimsy abodes hanging by the flanks, the sides of hills surrounding Port-au-Prince.  It's going to be a major catastrophe," said Haiti's ambassador to the United States, Raymond Joseph.

Joseph is calling for up to quadruple the amount of U.S. aid to his country, which now stands at about $300 million. He calls on the international community to help as well.

"Because the way it is, Port-au-Prince has to be rebuilt," he added.  "And I think a lot of the shanty towns that were crushed should not be rebuilt in Port-Au-Prince. Decentralized."

On Wednesday, U.S. President Barack Obama promised a full-scale humanitarian effort.

"I have directed my administration to respond with a swift, coordinated and aggressive effort to save lives," he said.

The United Nations said Wednesday that more than 100 people are missing from its wrecked headquarters. 

"The U.N. Headquarters at the Christopher Hotel collapsed in the quake," said Mr. Ban.  "Many people are still trapped inside."

Meantime, aid from around the world is bound for Haiti on its way from a range of countries including Iceland, China and Israel.

"We are heading to Haiti together with the first delegation of the Army's Home Front Command so we can examine how Israel can help in this terrible tragedy," said Danny Saaban of the Israeli Foreign Ministry.

People have sent their donations to various relief organizations and their prayers, including the Pope.

"I assure my spiritual closeness to those who have lost their homes, and to all the people who are suffering in various ways for this calamity," said Pope Benedict.

The United Nations reports that the main airport in Haiti's capital is operational and open to relief flights in the coming days.

Scientists with the U.S. Geological Survey say the earthquake struck about 10 kilometers from Port-au-Prince,  Tuesday afternoon.  The initial quake registered at magnitude 7 on the Richter Scale and was followed by several other shocks, including one that measured 5.9.

Julie Dutton is a geophysicist with the U.S. Geological Survey.

"It is a pretty significant earthquake," Dutton said.  "Given the size and location, we are anticipating some significant damage from the region."

Witnesses said a hospital in the capital collapsed, a luxury hotel in Petionville had sustained major damage and many other buildings were destroyed. The United Nations said there was serious damage to the headquarters of its mission in Haiti, and a large number of staff were unaccounted for.

Additional information from the island has been slow in coming, as telephone service from abroad has been disrupted.

Geophysicist Julie Dutton says she expects the damage to be severe, in part because many buildings are not designed to withstand earthquakes.

"This is actually the largest earthquake we have seen in the last 200 years in this region," she noted.  "There has not been a earthquake of Magnitude 6 range since the 1970s."

In Washington, President Barack Obama said the country stood ready to assist the people of Haiti and said his thoughts and prayers go out to those affected by the quake.

Secretary of State Hillary Clinton said officials were beginning to assess the disaster and deploy emergency aid to Haiti.

"The United States is offering our full assistance to Haiti and others in the region. We will be offering both civilian and military disaster relief and humanitarian assistance," Clinton said.

Officials with the U.S. Agency for International Development said they were preparing to send a response team that includes 72 people, six search and rescue dogs and 48 tons of rescue equipment.

The quake was also felt in Dominican Republic, which shares the island of Hispaniola with Haiti. Residents on the nearby island of Cuba also said they felt the quake, but no damage was reported.

Source: Voice of America

What is Oinkernet - Oinkernet is a new website that features guinea pigs

What is Oinkernet -
Oinkernet is taking a buzz in the world wide web.  Oinkernet is a a new website that features guinea pigs.  This site is automatically updated every two minutes

Under The Milky Way

Under The Milky Way Details

  • Original Release Date: September 28, 1999
  • Label: Buddha Records
  • Copyright: (P) 1999 Buddha Records
  • Total Length: 1:15:2

Mark McGwire and His Steroids Confession

Mark McGwire Makes a Big Confession on use of Steroids
Mark McGwire has made a great confession today.
Mark McGwire, Retired baseball admitted that he has used steroids during his period of playing baseball, , including when he broke the sport's home run record in 1998.
Mark McGwire said he had used steroids occasionally for about 10 years now and apologised.


"I used steroids during my playing career and I apologise," Mark McGwire said in a statement published on the Major League Baseball (MLB) website.
Mark McGwire said he remembered trying steroids very briefly in the 1989-1990 offseason when he was injured and1993.
Mark McGwire admitted using steroids occasion throughout the 90s, including during the 1998 season and wished he never touched steroids."
Mark McGwire added: "It was foolish and it was a mistake. I truly apologise. Looking back, I wish I had never played during the steroid era."

Drop a Comment for Mark McGwire and His Steroids Confession

Mark McGwire

According to Wikipedia, Mark McGwire (born October 1, 1963) is a former Major League Baseball player who played his major league career with the Oakland Athletics and the St. Louis Cardinals.[1] He is replacing Hal McRae as the hitting coach for the St. Louis Cardinals for 2010.[2]

For his career, McGwire averaged a home run once every 10.61 at bats, the lowest at bats per home run ratio in baseball history (Ryan Howard is second at 11.32 and Babe Ruth is third at 11.80).[3] In 1987, he broke the single-season home run record for rookies, with 49. In 1998, McGwire and Sammy Sosa achieved national fame for their home run-hitting prowess in pursuit of Roger Maris' single season home run record; McGwire would break the record and hit 70 home runs that year.

Portable Acetylene Lamps and Plants

PORTABLE ACETYLENE LAMPS AND PLANT

It will be apparent from what has been said in past chapters that the construction of a satisfactory generator for portable purposes must be a problem of considerable complexity. A fixed acetylene installation tends to work the more smoothly, and the gas evolved therefrom to burn the more pleasantly, the more technically perfect the various subsidiary items of the plant are; that is to say, the more thoroughly the acetylene is purified, dried, and delivered at a strictly constant pressure to the burners and stoves. Moreover, the efficient behaviour of the generator itself will depend more upon the mechanical excellence and solidity of its construction than (with one or two exceptions) upon the precise system to which it belongs. And, lastly, the installation will, broadly speaking, work the better, the larger the holder is in proportion to the demands ever made upon it; while that holder will perform the whole duty of a gasholder more effectually if it belongs to the rising variety than if it is a displacement holder. All these requirements of a good acetylene apparatus have to be sacrificed to a greater or less extent in portable generators; and since the sacrifice becomes more serious as the generator is made smaller and lighter in weight, it may be said in general terms that the smaller a portable (or, indeed, other) acetylene apparatus is, the less complete or permanent satisfaction will it give its user. Again, small portable apparatus are only needed to develop intensities of light insignificant in comparison with those which may easily be won from acetylene on a larger scale; they are therefore fitted with smaller burners, and those burners are not merely small in terms of consumption and illuminating power, but not infrequently are very badly constructed, and are relatively deficient in economy or duty. Thus any comparisons which may be made on lines similar to those adopted in Chapter I., or between unit weights, volumes, or monetary equivalents of calcium carbide, paraffin, candles, and colza oil, become utterly incorrect if the carbide is only decomposed in a small portable generator fitted with an inefficient jet; first, because the latent illuminating power of the acetylene evolved is largely wasted; secondly, because any gas produced over and above that capable of instant combustion must be blown off from a vent-pipe; and thirdly, because the carbide itself tends to be imperfectly decomposed, either through a defect in the construction of the lamp, or through the brief and interrupted requirements of the consumer.

In several important respects portable acetylene apparatus may be divided into two classes from a practical point of view. There is the portable table or stand lamp intended for use in an occupied room, and there is the hand or supported lamp intended for the illumination of vehicles or open-air spaces. Economy apart, no difficulty arises from imperfect combustion or escape of unburnt gas from an outdoor lamp, but in a room the presence of unburnt acetylene must always be offensive even if it is not dangerous; while the combustion products of the impurities—and in a portable generator acetylene cannot be chemically purified—are highly objectionable. It is simply a matter of good design to render any form of portable apparatus safe against explosion (employment of proper carbide being assumed), for one or more vent-pipes can always be inserted in the proper places; but from an indoor lamp those vent-pipes cannot be made to discharge into a place of safety, while, as stated before, a generator in which the vent-pipes come into action with any frequency is but an extravagant piece of apparatus for the decomposition of so costly a material as calcium carbide. Looked at from one aspect the holder of a fixed apparatus is merely an economical substitute for the wasteful vent- pipe, because it is a place in which acetylene can be held in reserve whenever the make exceeds the consumption in speed. It is perhaps possible to conceive of a large table acetylene lamp fitted with a water- sealed rising holder; but for vehicular purposes the displacement holder is practically the only one available, and in small apparatus it becomes too minute in size to be of much service as a store for the gas produced by after-generation. Other forms of holder have been suggested by inventors, such as a collapsible bag of india-rubber or the like; but rubber is too porous, weak, and perishable a material to be altogether suitable. If it is possible, by bringing carbide and water into mutual contact in predetermined quantities, to produce gas at a uniform rate, and at one which corresponds with the requirements of the burner, in a small apparatus—and experience has shown it to be possible within moderately satisfactory limits—it is manifest that the holder is only needed to take up the gas of after-generation; and in Chapters II. and III. it was pointed out that after-generation only occurs when water is brought into contact with an excess of carbide. If, then, the opposite system of construction is adopted, and carbide is fed into water mechanically, no after-generation can take place; and provided the make of gas can be controlled in a small carbide-feed generator as accurately as is possible in a small water-to-carbide generator, the carbide-feed principle will exhibit even greater advantages in portable apparatus than it does in plant of domestic size. Naturally almost every variety of carbide-feeding gear, especially when small, requires or prefers granulated (or granulated and "treated") carbide; and granulated carbide must inevitably be considerably more expensive per unit of light evolved than the large material, but probably in the application to which the average portable acetylene apparatus is likely to be put, strict economy is not of first consequence. In portable acetylene generators of the carbide-feed type, the supply is generally governed by the movements of a mushroom-headed or conical valve at the mouth of a conical carbide vessel; such movements occurring in sympathy with the alterations in level of the water in the decomposing chamber, which is essentially a small displacement holder also, or being produced by the contraction of a flexible chamber through which the gas passes on its way to the burner. So far as it is safe to speak definitely on a matter of this kind, the carbide-feed device appears to work satisfactorily in a stationary (e.g., table) lamp; but it is highly questionable whether it could be applied to a vehicular apparatus exposed to any sensible amount of vibration. The device is satisfactory on the table of an occupied room so far, be it understood, as any small portable generators can be: it has no holder, but since no after-generation occurs, no holder is needed; still the combustion products contaminate the room with all the sulphur and phosphorus of the crude acetylene.

For vehicular lamps, and probably for hand lanterns, the water-to-carbide system has practically no alternative (among actual generators), and safety and convenience have to be gained at the expense of the carbide. In such apparatus the supply of water is usually controlled ultimately by pressure, though a hand-operated needle-valve is frequently put on the water tube. The water actually reaches the carbide either by dropping from a jet, by passing along, upwards or downwards, a "wick" such as is used in oil-lamps, or by percolating through a mass of porous material like felt. The carbide is held in a chamber closed except at the gas exit to the burner and at the inlet from the water reservoir: so that if gas is produced more rapidly than the burner takes it, more water is prevented from entering, or the water already present is driven backwards out of the decomposing chamber into some adjoining receptacle. It is impossible to describe in detail all the lamps which have been constructed or proposed for vehicular use; and therefore the subject must be approached in general terms, discussing simply the principles involved in the design of a safe portable generator.

In all portable apparatus, and indeed in generators of larger dimensions, the decomposing chamber must be so constructed that it can never, even by wrong manipulation, be sealed hermetically against the atmosphere. If there is a cock on the water inlet tube which is capable of being completely shut, there must be no cock between the decomposing chamber and the burner. If there is a cock between the carbide vessel and the burner, the water inlet tube must only be closed by the water, being water-sealed, in fact, so that if pressure rises among the carbide the surplus gas may blow the seal or bubble through the water in the reservoir. If the water-supply is mainly controlled by a needle-valve, it is useful to connect the burner with the carbide vessel through a short length of rubber tube; and if this plan is adopted, a cock can, if desired, be put close to the burner. The rubber should not be allowed to form a bend hanging down, or water vapour, &c., may condense and extinguish the flame. In any case there should be a steady fall from the burner to the decomposing chamber, or to some separate catch-pit for the products of condensation. Much of the success attainable with small generators will depend on the water used. If it is contaminated with undissolved matter, the dirt will eventually block the fine orifices, especially the needle-valve, or will choke the pores of the wick or the felt pad. If the water contains an appreciable amount of "temporary hardness," and if it becomes heated much in the lamp, fur will be deposited sooner or later, and will obviously give trouble. Where the water reservoir is at the upper part of the lamp, and the liquid is exposed to the heat of the flame, fur will appear quickly if the water is hard. Considerable benefit would accrue to the user of a portable lamp by the employment of rain water filtered, if necessary, through fabric or paper. The danger of freezing in very severe weather may be prevented by the use of calcium chloride, or preferably, perhaps, methylated spirit in the water (cf. Chapter III., p. 92). The disfavour with which cycle and motor acetylene lamps are frequently regarded by nocturnal travellers, other than the users thereof, is due to thoughtless design in the optical part of such lamps, and is no argument against the employment of acetylene. By proper shading or deflection of the rays, the eyes of human beings and horses can be sufficiently protected from the glare, and the whole of the illumination concentrated more perfectly on the road surface and the lower part of approaching objects—a beam of light never reaching a height of 5 feet above the ground is all that is needed to satisfy all parties.

As the size of the generator rises, conditions naturally become more suited to the construction of a satisfactory apparatus; until generators intended to supply light to the whole of (say) a railway carriage, or the head and cab lamps of a locomotive, or for the outside and inside lighting of an omnibus are essentially generators of domestic dimensions somewhat altered in internal construction to withstand vibration and agitation. As a rule there is plenty of space at the side of a locomotive to carry a generator fitted with a displacement holder of sufficient size, which is made tall rather than wide, to prevent the water moving about more than necessary. From the boiler, too, steam can be supplied to a coil to keep the liquid from freezing in severe weather. Such apparatus need not be described at length, for they can be, and are, made on lines resembling those of domestic generators, though more compactly, and having always a governor to give a constant pressure. For carriage lighting any ordinary type of generator, preferably, perhaps, fitted with a displacement holder, can be erected either in each corridor carriage, or in a brake van at the end of the train. Purifiers may be added, if desired, to save the burners from corrosion; but the consumption of unpurified gas will seldom be attended by hygienic disadvantages, because the burners will be contained in closed lamps, ventilating into the outside air. The generator, also, may conveniently be so constructed that it is fed with carbide from above the roof, and emptied of lime sludge from below the floor of the vehicle. It can hardly be said that the use of acetylene generated on board adds a sensible risk in case of collision. In the event of a subsequent fire, the gas in the generator would burn, but not explode; but in view of the greater illuminating power per unit volume of carbide than per equal volume of compressed oil- gas, a portable acetylene generator should be somewhat less objectionable than broken cylinders of oil-gas if a fire should follow a railway accident of the usual kind. More particularly by the use of "cartridges" of carbide, a railway carriage generator can be constructed of sufficient capacity to afford light for a long journey, or even a double journey, so that attention would be only required (in the ordinary way) at one end of the line.

Passing on from the generators used for the lighting of vehicles and for portable lamps for indoor lighting to the considerably larger portable generators now constructed for the supply of acetylene for welding purposes and for "flare" lamps, it will be evident that they may embody most or all of the points which are essential to the proper working of a fixed generator for the supply of a small establishment. The holder will generally be of the displacement type, but some of these larger portable generators are equipped with a rising holder. The generators are, naturally, automatic in action, but may be either of the water-to-carbide or carbide-to-water type—the latter being preferable in the larger sizes intended for use with the oxy-acetylene blow-pipe for welding, &c., for which use a relatively large though intermittent supply of acetylene is called for. The apparatus is either carried by means of handles or poles attached to it, or is mounted on a wheelbarrow or truck for convenience of transport to the place where it is to be used. The so called "flare" lamps, which are high power burners mounted, with or without a reflector, above a portable generator, are extremely useful for lighting open spaces where work has to be carried on temporarily after nightfall, and are rapidly displacing oil-flares of the Lucigen type for such purposes.

The use of "cartridges" of calcium carbide has already been briefly referred to in Chapters II. and III. These cartridges are usually either receptacles of thin sheet-metal, say tin plate, or packages of carbide wrapped up in grease proof paper or the like. If of metal, they may have a lid which is detached or perforated before they are put into the generator, or the generator (when automatic and of domestic size) may be so arranged that a cartridge is punctured in one or more places whenever more gas is required. If wrapped in paper, the cartridges may be dropped into water by an automatic generator at the proper times, the liquid then loosening the gum and so gaining access to the interior; or one spot may be covered by a drape of porous material (felt) only, through which the water penetrates slowly. The substance inside the cartridge may be ordinary, granulated, or "treated" carbide. Cartridges or "sticks" of carbide are also made without wrappings, either by moistening powdered carbide with oil and compressing the whole into moulds, or by compressing dry carbide dust and immersing the sticks in oil or molten grease. The former process is said to cause the carbide to take up too much oil, so that sticks made by the second method are reputed preferable. All these cartridges have the advantage over common carbide of being more permanent in damp air, of being symmetrical in shape, of decomposing at a known speed, and of liberating acetylene in known quantity; but evidently they are more expensive, owing to the cost of preparing them, &c. They may be made more cheaply from the dust produced in the braking of carbide, but in that case the yield of gas will be relatively low.

It is manifest that, where space is to spare, purifiers containing the materials mentioned in Chapter V. can be added to any portable acetylene apparatus, provided also that the extra weight is not prohibitive. Cycle lamps and motor lamps must burn an unpurified gas unpurified from phosphorus and sulphur; but it is always good and advisable to filter the acetylene from dust by a plug of cotton wool or the like, in order to keep the burners as clear as may be. A burner with a screwed needle for cleaning is always advantageous. Formerly the burners used on portable acetylene lamps were usually of the single jet or rat-tail, or the union jet or fish tail type, and exhibited in an intensified form, on account of their small orifices, all the faults of these types of burners for the consumption of acetylene (see Chapter VIII.). Now, however, there are numerous special burners adapted for use in acetylene cycle and motor lamps, &c., and many of these are of the impinging jet type, and some have steatite heads to prevent distortion by the heat. One such cycle- lamp burner, as sold in England by L. Wiener, of Fore Street, London, is shown in Fig. 21. A burner constructed like the "Kona" (Chapter VIII.) is made in small sizes (6, 8 and 10 litres per hour) for use in vehicular lamps, under the name of the "Konette," by Falk, Stadelmann and Co., Ltd., of London, who also make a number of other small impinging jet burners. A single jet injector burner on the "Phôs" principle is made in small sizes by the Phôs Co., of London, specially for use in lamps on vehicles.

[Illustration: FIG. 21.—CYCLE-LAMP BURNER NO. 96042A.]

Nevertheless, although satisfactory medium-sized vehicular lamps for the generation of acetylene have been constructed, the best way of using acetylene for all such employments as these is to carry it ready made in a state of compression. For railway purposes, where an oil-gas plant is in existence, and where it is merely desired to obtain a somewhat brighter light, the oil-gas may be enriched with 20 per cent. of acetylene, and the mixed gas pumped into the same cylinders to a pressure of 10 atmospheres, as mentioned in Chapter XI.; the only alteration necessary being the substitution of suitable small burners for the common oil-gas jets. As far as the plant is concerned, all that is required is a good acetylene generator, purifier, and holder from which the acetylene can be drawn or forced through a meter into a larger storage holder, the meter being connected by gearing with another meter on the pipe leading from the oil-gas holder to the common holder, so that the necessary proportions of the two gases shall be introduced into the common holder simultaneously. From this final holder the enriched gas will be pumped into the cylinders or into a storage cylinder, by means of a thoroughly cooled pump, so that the heat set free by the compression may be safely dissipated.

Whenever still better light is required in railway carriages, as also for the illumination of large, constantly used vehicles, such as omnibuses, the acetone process (cf. Chapter XI.) exhibits notable advantages. The light so obtained is the light of neat acetylene, but the gas is acetylene having an upper limit of explosibility much lower than usual because of the vapour of acetone in it. In all other respects the presence of the acetone will be unnoticeable, for it is a fairly pure organic chemical body, which burns in the flame completely to carbon dioxide and water, exactly as acetylene itself does. If the acetylene is merely compressed into porous matter without acetone, the gas burnt is acetylene simply; but per unit of volume or weight the cylinders will not be capable of developing so much light.

In the United States, at least one railway system (The Great Northern) has a number of its passenger coaches lighted by means of plain acetylene carried in a state of compression in cylinders without porous matter. The gas is generated, filtered from dust, and stored in an ordinary rising holder at a factory alongside the line; being drawn from this holder through a drier to extract moisture, and through a safety device, by a pump which, in three stages, compresses the acetylene into large storage reservoirs. The safety device consists of a heavy steel cylinder filled with some porous substance which, like the similar material of the acetone cylinders, prevents any danger of the acetylene contained in the water-sealed holder being implicated in an explosion starting backwards from the compression, by extinguishing any spark which might be produced there. The plant on the trains comprises a suitable number of cylinders, filled by contact with the large stores of gas to a pressure of 10 atmospheres, pipes of fusible metal communicating with the lamps, and ordinary half-foot acetylene burners. The cylinders are provided with fusible plugs, so that, in the event of a fire, they and the service- pipes would melt, allowing the gas to escape freely and burn in the air, instead of exploding or dissociating explosively within the cylinders should the latter be heated by any burning woodwork or the like. It is stated that this plan of using acetylene enables a quantity of gas to be carried under each coach which is sufficient for a run of from 53 to 70 hours' duration, or of over 3600 miles; that is to say, enables the train, in the conditions obtaining on the line in question, to make a complete "round trip" without exhaustion of its store of artificial light. The system has been in operation for some years, and appears to have been so carefully managed that no accident has arisen; but it is clear that elements of danger are present which are eliminated when the cylinders are loaded with porous matter and acetone. The use of a similar system of compressed acetylene train lighting in South America has been attended with a disastrous explosion, involving loss of life.

It may safely be said that the acetone system, or less conveniently perhaps the mere compression into porous matter, is the best to adopt for the table-lamp which is to be used in occupied rooms Small cylinders of such shapes as to form an elegant base for a table-lamp on more or less conventional lines would be easy to make. They would be perfectly safe to handle. If accidentally or wilfully upset, no harm would arise. By deliberate ill-treatment they might be burst, or the gas-pipe fractured below the reducing valve, so that gas would escape under pressure for a time; but short of this they would be as devoid of extra clangor in times of fire as the candle or the coal-gas burner. Moreover, they would only contaminate the air with carbon dioxide and water vapour, for the gas is purified before compression; and modern investigations have conclusively demonstrated that the ill effects produced in the air of an imperfectly ventilated room by the extravagant consumption of coal-gas depend on the accumulation of the combustion products of the sulphur in the gas rather than upon the carbon dioxide set free.

One particular application of the portable acetylene apparatus is of special interest. As calcium carbide evolves an inflammable gas when it merely comes into contact with water, it becomes possible to throw into the sea or river, by hand or by ejection from a mortar, a species of bomb or portable generator which is capable of emitting a powerful beam of light if only facilities are present for inflaming the acetylene generated; and it is quite easy so to arrange the interior of such apparatus that they can be kept ready for instant use for long periods of time without sensible deterioration, and that they can be recharged after employment. Three methods of firing the gas have been proposed. In one the shock or contact with the water brings a small electric battery into play which produces a spark between two terminals projecting across the burner orifice; in the second, a cap at the head of the generator contains a small quantity of metallic potassium, which decomposes water with such energy that the hydrogen liberated catches fire; and in the third a similar cap is filled with the necessary quantity of calcium phosphide, or the "carbophosphide of calcium" mentioned in Chapter XI., which yields a flame by the immediate ignition of the liquid phosphine produced on the attack of water. During the two or three seconds consumed in the production of the spark or pilot flame, the water is penetrating the main charge of calcium carbide in the interior of the apparatus, until the whole is ready to give a bright light for a time limited only by the capacity of the generator. It is obvious that such apparatus may be of much service at sea: they may be thrown overboard to illuminate separate lifebuoys in case of accident, or be attached to the lifebuoys they are required to illuminate, or be used as lifebuoys themselves if fitted with suitable chains or ropes; they may be shot ahead to illuminate a difficult channel, or to render an enemy visible in time of war. Several such apparatus have already been constructed and severely tested; they appear to give every satisfaction. They are, of course, so weighted that the burner floats vertically, while buoyancy is obtained partly by the gas evolved, and partly by a hollow portion of the structure containing air. Cartridges of carbide and caps yielding a self- inflammable gas can be carried on board ship, by means of which the torches or lifebuoys may be renewed after service in a few minutes' time.

sundry uses for acetylene

SUNDRY USES
There are sundry uses for acetylene, and to some extent for carbide, which are not included in what has been said in previous chapters of this book; and to them a few words may be devoted.
In orchards and market gardens enormous damage is frequently done to the crops by the ravages of caterpillars of numerous species. These caterpillars cannot be caught by hand, and hitherto it has proved exceedingly difficult to cope with them. However, when they have changed into the perfect state, the corresponding butterflies and moths, like most other winged insects, are strongly attracted by a bright light. As acetylene can easily be burnt in a portable apparatus, and as the burners can be supplied with gas at such comparatively high pressure that the flames are capable of withstanding sharp gusts of wind even when not protected by glass, the brilliant light given by acetylene forms an excellent method of destroying the insects before they have had time to lay their eggs. Two methods of using the light have been tried with astonishing success: in one a naked flame is supported within some receptacle, such as a barrel with one end knocked out, the interior of which is painted heavily with treacle; in the other the flame is supported over an open dish filled with some cheap heavy oil (or perhaps treacle would do equally well). In the first case the insects are attracted by the light and are caught by the adhesive surfaces; in the second they are attracted and singed, and then drowned in, or caught by, the liquid. Either a well-made, powerful, vehicular lamp with its bull's- eye (if any) removed could be used for this purpose, or a portable generator of any kind might be connected with the burner through a flexible tube. It is necessary that the lights should be lit just before dusk when the weather is fine and the nights dark, and for some twenty evenings in June or July, exactly at the period of the year when the perfect insects are coming into existence. In some of the vineyards of Beaujolais, in France, where great havoc has been wrought by the pyralid, a set of 10-candle-power lamps were put up during July 1901, at distances of 150 yards apart, using generators containing 6 oz. of carbide, and dishes filled with water and petroleum 18 or 20 inches in diameter. In eighteen nights, some twenty lamps being employed, the total catch of insects was 170,000, or an average of 3200 per lamp per night. At French prices, the cost is reported to have been 8 centimes per night, or 32 centimes per hectare (2.5 acres). In Germany, where school children are occasionally paid for destroying noxious moths, two acetylene lamps burning for twelve evenings succeeded in catching twice as many insects as the whole juvenile population of a village during August 1902. A similar process has been recommended for the destruction of the malarial mosquito, and should prove of great service to mankind in infected districts. The superiority of acetylene in respect of brilliancy and portability will at once suggest its employment as the illuminant in the "light" moth-traps which entomologists use for entrapping moths. In these traps, the insects, attracted by the light, flutter down panes of glass, so inclined that ultimate escape is improbable; while they are protected from injury through contact with the flame by moans of an intervening sheet of glass.
Methods of spraying with carbide dust have been found useful in treating mildew in vines; while a process of burying small quantities of carbide at the roots has proved highly efficacious in exterminating phylloxera in the French and Spanish vineyards. It was originally believed that the impurities of the slowly formed acetylene, the phosphine in particular, acted as toxic agents upon the phylloxera; and therefore carbide containing an extra amount of decomposable phosphides was specially manufactured for the vine-growers. But more recently it has been argued, with some show of reason, that the acetylene itself plays a part in the process, the effects produced being said to be too great to be ascribed wholly to the phosphine. It is well known that many hydrocarbon vapours, such as the vapour of benzene or of naphthalene, have a highly toxic action on low organisms, and the destructive effect of acetylene on phylloxera may be akin to this action.
As gaseous acetylene will bear a certain amount of pressure in safety—a pressure falling somewhat short of one effective atmosphere—and as pressure naturally rises in a generating apparatus where calcium carbide reacts with water, it becomes possible to use this pressure as a source of energy for several purposes. The pressure of the gas may, in fact, be employed either to force a stream of liquid through a pipe, or to propel certain mechanism. An apparatus has been constructed in France on the lines of some portable fire-extinguishing appliances in which the pressure set up by the evolution of acetylene in a closed space produces a spray of water charged with lime and gas under the pressure obtaining; the liquid being thrown over growing vines or other plants in order to destroy parasitic and other forms of life. The apparatus consists of a metal cylinder fitted with straps so that it can be carried by man or beast. At one end it has an attachment for a flexible pipe, at the other end a perforated basket for carbide introduced and withdrawn through a "man-hole" that can be tightly closed. The cylinder is filled with water to a point just below the bottom of the basket when the basket is uppermost; the carbide charge is then inserted, and the cover fastened down. As long as the cylinder is carried in the same position, no reaction between the carbide and the water occurs, and consequently no pressure arises; but on inverting the vessel, the carbide is wetted, and acetylene is liberated in the interior. On opening the cock on the outlet pipe, a stream of liquid issues and may be directed as required. By charging the cylinder in the first place with a solution of copper sulphate, the liquid ejected becomes a solution and suspension of copper and calcium salts and hydroxides, resembling "Bordeaux mixture," and may be employed as such. In addition, it is saturated with acetylene which adds to its value as a germicide.
The effective gas pressure set up in a closed generator has also been employed in Italy to drive a gas-turbine, and so to produce motion. The plant has been designed for use in lighthouses where acetylene is burnt, and where a revolving or flashing light is required. The gas outlet from a suitably arranged generator communicates with the inlet of a gas- turbine, and the outlet of the turbine is connected to a pipe leading to the acetylene burners. The motion of the turbine is employed to rotate screens, coloured glasses, or any desired optical arrangements round the flames; or, in other situations, periodically to open and close a cock on the gas-main leading to the burners. In the latter case, a pilot flame fed separately is always alight, and serves to ignite the gas issuing from the main burners when the cock is opened.
Another use for acetylene, which is only dependent upon a suitably lowered price for carbide to become of some importance, consists in the preparation of a black pigment to replace ordinary lampblack. One method for this purpose has been elaborated by Hubou. Acetylene is prepared from carbide smalls or good carbide, according to price, and the gas is pumped into small steel cylinders to a pressure of 2 atmospheres. An electric spark is then passed, and the gas, standing at its limit of safety, immediately dissociates, yielding a quantitative amount of hydrogen and free carbon. The hydrogen is drawn off, collected in holders, and used for any convenient purpose; the carbon is withdrawn from the vessel, and is ready for sale. At present the pigment is much too expensive, at least in British conditions, to be available in the manufacture of black paint; but its price would justify its employment in the preparation of the best grades of printers' ink. One of the authors has examined an average sample and has found it fully equal in every way to blacks, such as those termed "spirit blacks," which fetch a price considerably above their real value. It has a pure black cast of tint, is free from greasy matter, and can therefore easily be ground into water, or into linseed oil without interfering with the drying properties of the latter. Acetylene black has also been tried in calico printing, and has given far better results in tone and strength than other blacks per unit weight of pigment. It may be added that the actual yield of pigment from creosote oils, the commonest raw material for the preparation of lampblack ("vegetable black"), seldom exceeds 20 or 25 per cent., although the oil itself contains some 80 per cent, of carbon. The yield from acetylene is clearly about 90 per cent., or from calcium carbide nearly 37.5 per cent, of the original weight.
An objection urged against the Hubou process is that only small quantities of the gas can be treated with the spark at one time; if the cylinders are too large, it is stated, tarry by-products are formed. A second method of preparing lampblack (or graphite) from acetylene is that devised by Frank, and depends on utilising the reactions between carbon monoxide or dioxide and acetylene or calcium carbide, which have already been sketched in Chapter VI. When acetylene is employed, the yield is pure carbon, for the only by-product is water vapour; but if the carbide process is adopted, the carbon remains mixed with calcium oxide. Possibly such a material as Frank's carbide process would give, viz., 36 parts by weight of carbon mixed with 56 parts of quicklime or 60 parts of carbon mixed with 112 parts of quicklime, might answer the purpose of a pigment in some black paints where the amount of ash left on ignition is not subject to specification. Naturally, however, the lime might be washed away from the carbon by treatment with hydrochloric acid; but the cost of such a purifying operation would probably render the residual pigment too expensive to be of much service except (conceivably) in the manufacture of certain grades of printers' ink, for which purpose it might compete with the carbon obtainable by the Hubou process already referred to.
Acetylene tetrachloride, or tetrachlorethane, C_2H_2Cl_4, is now produced for sale as a solvent for chlorine, sulphur, phosphorus, and organic substances such as fats. It may be obtained by the direct combination of acetylene and chlorine as explained in Chapter VI., but the liability of the reaction to take place with explosive violence would preclude the direct application of it on a commercial scale. Processes free from such risk have now, however, been devised for the production of tetrachlorethane. One patented by the Salzbergwerk Neu-Stassfurt consists in passing acetylene into a mixture of finely divided iron and chloride of sulphur. The iron acts as a catalytic. The liquid is kept cool, and as soon as the acetylene passes through unabsorbed, its introduction is stopped and chlorine is passed in. Acetylene and chlorine are then passed in alternately until the liquid finally is saturated with acetylene. The tetrachlorethane, boiling at 147° C., is then distilled off, and the residual sulphur is reconverted to the chloride for use again in the process. A similar process in which the chlorine is used in excess is applicable also to the production of hexachlorethane.
Dependent upon price, again, are several uses for calcium carbide as a metallurgical or reducing reagent; but as those are uses for carbide only as distinguished from acetylene, they do not fall within the purview of the present book.
When discussing, in Chapter III., methods for disposing of the lime sludge coming from an acetylene generator, it was stated that on occasion a use could be found for this material. If the carbide has been entirely decomposed in an apparatus free from overheating, the waste lime is recovered as a solid mass or as a cream of lime practically pure white in colour. Sometimes, however, as explained in Chapter II., the lime sludge is of a bluish grey tint, even in cases where the carbide decomposed was of good quality and there was no overheating in the generator. Such discoloration is of little moment for most of the uses to which the sludge may be put. The residue withdrawn from a carbide-to-water generator is usually quite fluid; but when allowed to rest in a suitable pit or tank, it settles down to a semi-solid or pasty mass which contains on a rough average 47 per cent. of water and 53 per cent. of solid matter, the amount of lime present, calculated as calcium oxide, being about 40 per cent. Since 64 parts by weight of pure calcium carbide yield 74 parts of dry calcium hydroxide, it may be said that 1 part of ordinary commercial carbide should yield approximately 1.1 parts of dry residue, or 2.1 parts of a sludge containing 47 per cent. of moisture; and sludge of this character has been stated by Vogel to weigh about 22.5 cwt. per cubic yard.
Experience has shown that those pasty carbide residues can be employed very satisfactorily, and to the best advantage from the maker's point of view, by builders and decorators for the preparation of ordinary mortar or lime-wash. The mortar made from acetylene lime has been found equal in strength and other properties to mortar compounded from fresh slaked lime; while the distemper prepared by diluting the sludge has been used most successfully in all places where a lime-wash is required, e.g., on fruit-trees, on cattle-pens, farm-buildings, factories, and the "offices" of a residence. Many of the village installations abroad sell their sludge to builders for the above-mentioned purposes at such a price that their revenue accounts are materially benefited by the additional income. The sludge is also found serviceable for softening the feed-water of steam boilers by the common liming process; although it has been stated that the material contains certain impurities—notably "fatty matter"—which becomes hydrolysed by the steam, yielding fatty acids that act corrosively upon the boiler-plates. This assertion would appear to require substantiation, but a patent has been taken out for a process of drying the sludge at a temperature of 150° to 200° C. in order to remove the harmful matter by the action of the steam evolved. So purified, it is claimed, the lime becomes fit for treating any hard potable or boiler- feed water. It is very doubtful, however, whether the intrinsic value of acetylene lime is such in comparison with the price of fresh lime that, with whatever object in view, it would bear the cost of any method of artificial drying if obtained from the generators in a pasty state.
When, on the other hand, the residue is naturally dry, or nearly so, it is exactly equal to an equivalent quantity of quick or slaked lime as a dressing for soil. In this last connexion, however, it must be remembered that only certain soils are improved by an addition of lime in any shape, and therefore carbide residues must not be used blindly; but if analysis indicates that a particular plot of ground would derive benefit from an application of lime, acetylene lime is precisely as good as any other description. Naturally a residue containing unspent carbide, or contaminated with tarry matter, is essentially valueless (except as mentioned below); while it must not be forgotten that a solid residue if it is exposed to air, or a pasty residue if not kept under water, will lose many of its useful properties, because it will be partially converted into calcium carbonate or chalk.
Nevertheless, in some respects, the residue from a good acetylene generator is a more valuable material, agriculturally speaking, than pure lime. It contains a certain amount of sulphur, &c., and it therefore somewhat resembles the spent or gas lime of the coal-gas industry. This sulphur, together, no doubt, with the traces of acetylene clinging to it, renders the residue a valuable material for killing the worms and vermin which tend to infest heavily manured and under-cultivated soil. Acetylene lime has been found efficacious in exterminating the "finger-and-toe" of carrots, the "peach-curl" of peach-trees, and in preventing cabbages from being "clubbed." It may be applied to the ground alone, or after admixture with some soil or stable manure. The residue may also be employed, either alone or mixed with some agglomerate, in the construction of garden paths and the like.
If the residues are suitably diluted with water and boiled with (say) twice their original weight of flowers of sulphur, the product consists of a mixture of various compounds of calcium and sulphur, or calcium sulphides—which remain partly in solution and partly in the solid state. This material, used either as a liquid spray or as a moist dressing, has been said to prove a useful garden insecticide and weed-killer.
There are also numerous applications of the acetylene light, each of much value, but involving no new principle which need be noticed. The light is so actinic, or rich in rays acting upon silver salts, that it is peculiarly useful to the photographer, either for portraiture or for his various positive printing operations. Acetylene is very convenient for optical lantern work on the small scale, or where the oxy-hydrogen or oxy-coal-gas light cannot be used. Its intensity and small size make its self-luminous flame preferable on optical grounds to the oil-lamp or the coal-gas mantle; but the illuminating surface is nevertheless too large to give the best results behind such condensers as have been carefully worked to suit a source of light scarcely exceeding the dimensions of a point. For lantern displays on very large screens, or for the projection of a powerful beam of light to great distances in one direction (as in night signalling, &c.), the acetylene blowpipe fed with pure oxygen, or with air containing more than its normal proportion of oxygen, which is discussed in Chapter IX., is specially valuable, more particularly if the ordinary cylinder of lime is replaced by one of magnesia, zirconia, or other highly refractory oxide.