In _simple vaginitis_ the inflamed membrane remains smooth. In _granular vaginitis_, which is the variety usually seen, the papillæ are infiltrated with small cells, and are much enlarged, so that the inflamed surface has a granular appearance. _Senile vaginitis_ is due to infection of portions of the vaginal mucous membrane that have lost their epithelium as a result of the atrophic changes of old age. This disease occurs in patches of various size, sometimes presenting the character of ecchymosis; in other cases the patches have altogether lost the epithelium, and permanent adhesions may take place between areas which are brought in contact. This form of vaginitis has also been called adhesive vaginitis. It is said that a similar condition may occur in children. The _emphysematous_ form of vaginitis occurs in pregnancy. The vaginal walls are swollen and crepitating. The gas is contained in the meshes of the connective tissue. Acute vaginitis is accompanied by dull pain and a sense of fulness in the pelvis. The discomfort is increased by standing, walking, defecation, and urination. There is a free discharge of serum or pus, which may be tinged with blood. The character of the discharge depends upon the variety and the period of the disease. Inspection, which can best be made through the Sims speculum, with the woman in the Sims or knee-chest position, shows the characteristic lesions of inflammation of the mucous membrane. Acute vaginitis, if neglected, may pass into the chronic form. It usually lingers in the upper part of the vagina, in the fornices, especially in vaginitis of gonorrheal origin. By careful inspection we find here one or more granular patches of inflammation, which cause a vaginal discharge from which man may be infected, and from which infection of the upper portion of the genital tract, the uterus, and the Fallopian tubes may be derived. _Treatment._--Vaginitis, especially of the gonorrheal form, should be treated vigorously, and treatment should be continued until all traces of inflammation have disappeared. Inflammation of any part of the lower portion of the genital tract may have the most disastrous consequences if it extends to the uterus and the Fallopian tubes. The woman should be kept as quiet as possible. The bowels should be moved freely with saline purgatives. She should take, three times in twenty-four hours, lying upon her back, a vaginal douche of one gallon of a boracic-acid solution (ʒj to the pint). The temperature of the solution should be about 110° F. If the disease be of gonorrheal origin, a warm bichloride solution (1:5000) should be used in the same way.