Sexual intercourse gives frequent opportunities for the introduction of infective germs into the vagina, and for the origination of inflammatory affections of the mucous membrane (_colpitis_), the intensity of which depends upon the species, the quantity, and the virulence of the germs in question, on the one hand, and upon the local and constitutional predisposition of the infected person, upon the other. Especially grave in its consequences is gonorrhœal infection transmitted by the male, for this virus gives rise to a great variety of pathological processes in the female genital organs. In the act of defloration, considerable injuries are sometimes produced, and these readily supply a breach for the invasion of infective organisms. The condition of passive hyperæmia that occurs in the genital organs during pregnancy also provides a favorable soil for their growth. Gonorrhœal infection of young married women is so frequent and so serious an occurrence in the sexual life of woman, that it requires special consideration. The cases in which the man entering upon marriage is so unscrupulous and so brutal as to deflower his young wife and to continue copulating with her, while suffering himself from a quite recent and active gonorrhœa, are on the whole rare. More common is it for the bridegroom to believe himself completely cured of his previous claps, and he is declared cured by his physician. The disease is, however, latent merely, the gonorrhœa has become chronic, the discharge is so slight that it is overlooked; but by the stimulation of the frequent acts of coition usual in the early days of marriage, the disease is lighted up afresh, the gonococci multiply quickly and intensely, the young wife is infected, and suffers from an acute gonorrhœa, which may often escape observation for a considerable period.