Endometritis has been observed sixteen times, as follows: Carnivora 10, Rodentia 3, Ungulata 2, Edentata 1. In searching for causes it was found that the association with a recent delivery of young, an abortion or the retention of a fetus, was responsible five times. Association with tumors of the uterus was noted four times. Injury preceded the condition on two occasions, while one instance seemed to be hematogenic, being secondary to a septic pneumonia. On four occasions the actual cause could not be established with satisfaction. Pathologically the traumatic and parturient cases were purulent while tumors seemed to produce a more exfoliative or hypertrophic inflammation. Inflammation of the Fallopian tube has been observed but five times, and only in one of these did the uterine wall fail to participate in the disease. The animals affected were three carnivores, one rodent and one marsupial. No particularly important association of this salpingitis and other pathology was noted, and indeed the only noteworthy lesion of the organ under discussion is now to be cited. Nylghaie (_Boselaphus tragocamelus_). Chronic vaginitis, fibroma uteri, chronic tuberculous salpingitis. The vulva and lower half of the vagina are covered by a thin coating of yellowish mucus. Mucosa is mottled purple, irregular, in some places smooth and flat, and in others showing clear cysts with yellowish fluid contents. The upper part of the vagina shows a pedunculated fibroid extending from the cervix. This tumor measures 32 × 20 mm., and is attached to the posterior cervical wall by a broad pedicle and is of smooth surface. The right uterine wall shows a large fibroid which twists the uterine lumen to the left. The tumor in the right uterine cornu is nodular, measures 11 × 9 × 7 cm., shows many dilated veins coursing over the surface and one section shows a soft central necrotic area. The left uterine cornu shows a small fibroid at the lower end. There is a chronic endometritis present. The outer half of the right tube is the seat of firm nodular swellings, one of which proves to be a purulent salpingitis (tuberculous), the others calcareocaseous salpingitis. Both ovaries are fibroid and cystic. Microscopic section shows some exfoliation of the epithelium of the vagina. The uterine cornu is thickened and the fibrous tissue is greatly increased. The tube is the seat of a purulent salpingitis with an occasional broken down tubercle present. The ovaries show a mild degree of oöphoritis (Fig. 23). OBSTRUCTIONS TO CONTINUITY OF BIRTH CANAL. Obstruction to the lumen of the genital canal was observed in three mammals.