Pigtailed Macaque (_Macacus nemestrinus_). Received March 5, 1903, died October 29, 1904. This animal gave birth on December 28, 1903 to a young one which appeared feet first; the arms appeared to have penetrated the septum between the vagina and rectum and protruded through the anus. Had to be cut off before delivery. She had a second young one October 21, 1904, which was properly delivered but was weak and lived two days, having received little attention from the mother. The mother since has been weak in the hind legs, eaten almost nothing and several times has passed a little blood in the stool. Lungs are partially collapsed; contain scattered small pinhead tubercles; right lower lobe contains a caseous nodule about the size of a cherry. Both pleuræ contain clear fluid. Abdomen contains a half pint of cloudy fluid. Omentum adherent along lower border and region of spleen and contains pinhead tubercles. Surface of the liver is studded with numerous pinpoint, pinhead and (old) pea sized tubercles. Some places in the liver seem to be the result of two invasions. Spleen presents small cherry sized tubercles thickly grouped together leaving small amount of splenic tissue to be seen. Kidneys contain pinhead to barley grain tubercles. Uterus is somewhat enlarged. External surface smooth. Section shows wall to be about one-quarter inch thick. Uterine cavity enlarged. Considerable bloody pus in uterine cavity. No communication can be found between the bladder and the vaginal wall or between the vaginal wall and the rectum. The intestines are negative. Mesenteric glands enlarged and caseous. Abortion and miscarriage are occasionally seen in the monkeys, rodents and ungulates. The underlying reason for this can seldom be determined. A few cases seem to depend upon annoyance or abuse by cage-mates, a few to immaturity of the mother and some others seem the result of bone diseases such as osteomalacia. It does not occur regularly in any group or enclosure and appears to have no comparative pathological value. Injuries of the external genitalia of the nature of lacerated wounds are occasionally seen in ungulates and carnivores, but never in monkeys. Acute vaginitis, sometimes localized into an abscess of the wall has been known to follow these traumata. Chronic changes have been met but once, which example will be detailed under another heading. INFLAMMATIONS.