140 PROCEEDINGS OF THE ACADEMY OF [1881. 



book. The testicles, t, were found in the inguinal canal, midway 



between the internal and external abdominal rings. There was a 



free communication between the cavity of the peritoneum and 



that of the tunica vaginalis testis. The cremaster muscle was 



well developed, and arose, as usual, from the internal oblique and 



transversalis muscles. The testicle itself measured 2^ inches. 



The vas deferens, v, measured 18 inches from the epididymis to 



the point where it is joined by the duct of the seminal vesicle. 



The latter was about an inch in length, but not much developed. 



The ejaculatory ducts open into the urethra at the verumontanum. 



Genito- Urinary Organs in Female. — The ovai-y, o (Plate XV), 



in the Hippopotamus is elongated and flattened, measuring an 



inch in length and f of an inch in breadth. The Fallopian tube,/, 



8 inches long and ^ of an inch wide, pursues quite a flexuous 



course towards the cornua of the uterus, cu, into which it opens 



by a very small aperture. The pavilion, p, while not fringed, 



consists of a series of folds radiating from the central opening. 



The latter readily admitted a bristle. The cornua of the uterus, cu, 



measured 6^ inches in length and | of an inch in breadth. For the 



last two inches of their course the cornua run alongside of each 



other, and are apparently fused together, though internall}^ they 



are seen to be still quite distinct. Finally, each cornu opens by a 



wide mouth into a common cavity, which probably represents the 



body of the uterus. While the mucous membrane of the cornua 



is thrown into longitudinal folds, that of the body of the uterus is 



smooth. What is usually regarded as uterus is very small, 



measuring only ^ an inch in length and 1;^ inches in width. It 



appears to me, however, that this space represents only a part of 



the uterus ; the bod}'^ and that which has been heretofore described 



as vagina, is really an elongated cervix uteri ; this measures 6 



inches in length and 1 inch in width. Its mucous membrane was 



elevated into seventeen folds, c, which are situated transversely 



to the long axis of the vagina, and which resemble valvulfe conni- 



ventes. These folds, on an average, were | of an inch in breadth 



and I inch in height, and are subdivided by indentations. Every 



other fold, however, alternates in reference to the part where it 



was most developed. Thus, the first, third, fifth folds, etc., were 



thickest in the middle, fading away at the sides into the walls of 



the vagina, whereas the second, fourth and sixth folds, etc., were 



thickest at the sides of the vagina, fading away towards the middle. 



