This prevents both conception and infection (excepting in parts not covered by the sheath), but sheaths are apt to break, and sometimes a man infects himself whilst removing the sheath. Sheaths impose an impermeable medium between husband and wife, destroy contact, and may thereby prevent the joy of sexual intercourse. In some cases both husband and wife become nervous wrecks, recovering their health when the sheaths are discarded; in other cases it is claimed that no harm has resulted.
Contraception
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