is worthy of note from the extreme dilatation of its capillaries. [Illustration: FIG. 28.—PAPILLARY ADENOMA OF OVARY. WILD TURKEY (MELLEAGRIS GALLOPAVO). ] A papillary adenoma was found in a wild turkey (Fig. 26) and a mixed cell sarcoma in a King parrakeet (_Apromictus cyanopygius_). None of these tumors sent out metastases. Interest in the avian reproductive tract from a pathological standpoint centres around the tumors as already given, and abnormalities in egg- bearing. Among our specimens there have been many cases of soft shelled eggs apparently blocked in the oviduct, of “egg-binding” and of the inspissated-egg-remains in the abdominal cavity. These conditions are well known to veterinarians and are explained on the basis of improper food, immaturity of the bearing fowl, injury and inflammations of the cloaca and oviduct. I made an attempt to associate these conditions with infectious disease incidence and with the normal egg size. The results are not harmonious. No relation existed between general or local infection and any of these conditions. Gallinaceous birds with their large eggs show the highest percentage (2.3 per cent.), but Anseres with a somewhat larger relative egg size show 1.6 per cent. Passeres, with eggs of very variable size but relatively large pelves, have an incidence of .6 per cent. Struthiones’ eggs are relatively small; their incidence is 1.5 per cent. Salpingitis occurred in seven cases, but there have been no evidences of an acute infectious disease such as is responsible for gleet. THE MAMMARY GLAND. This structure has been the seat of three inflammatory conditions and four tumors. The former occurred twice in nursing animals, one of which seemed to be suffering with distemper, another from puerperal sepsis, while the third case was probably traumatic. The animals were in order, a raccoon, a coati and a skunk. Four cancers of the breast have been observed, all richly cellular or glandular in type; none of the scirrhous variety has been encountered. Two of them were ulcerating and one was about to become so. One gave extension to the axilla and lung, one had penetrated the abdominal wall and grown around the kidney; the remainder had not yet extended. The animals were Black Bear (_Ursus americanus_) (thoracic mamma with extension), Common Opossum (_Didelphys virginiana_) (two sections of breast in pouch), two White footed Mice (_Peromyscus leucopus_) (posterior abdominal right gland and whole side). These animals were all adult but not old. [Illustration: FIG. 29.—ADENOCARCINOMA OF MAMMARY GLAND (TWO SECTIONS WITHIN POUCH). COMMON OPOSSUM (DIDELPHYS VIRGINIANA). ] SECTION X THE MALE GENITALIA