274 



Dr. M. Watson. 



peritoneal pouch, or pavilion, such as in many animals, e.g., hyaena, 

 forms an almost complete sac for the accommodation of this organ. 



Fallopian Tube. — This tube describes a very peculiar course. Its 

 abdominal opening, or morsus diaboli, lies in relation to the dorsal 

 surface of the ovary, and is placed between the inner end of the 

 latter and the free extremity of the uterine horn. The opening itself 

 is directed upwards toward the spine of the animal, and appears, at 

 first sight, to be altogether destitute of fimbriae. Upon closer ex- 

 amination, however, with the aid of a magnifying glass, a number of 

 very minute fimbriae are seen to surround the aperture. These 

 fimbriae do not project beyond the margins of the opening, bat 

 are concealed within the orifice, and consequently can be of no 

 service at the time of ovulation in grasping the ovary and bringing 

 the latter into direct relation with the Fallopian tube. From the 

 morsus diaboli the tube winds forward so as to reach the anterior 

 margin of the ovary along which it passes as far as the outer ex- 

 tremity of the latter. Here it changes its course, and becoming 

 applied to the posterior border of the ovary, extends along it and ter- 

 minates abruptly in the much wider extremity of the uterine horn. 

 The Fallopian tube thus almost encircles the ovary. The tube 

 measures three- fourths of an inch in length and one- eighth of an inch 

 in diameter. It is of uniform diameter throughout and presents no 

 trace of a dilated extremity or so-called infundibulum. 



Exterior of Uterus, Vagina, and Urogenital Canal. — The uterus con- 

 sists of a central body and two horns. The left or unimpregnated 

 horn was flattened from above downwards, and was strongly curved, 

 the convexity of the curve being directed forwards. Measured from 

 the middle line of the uterus, its anterior or convex border amounted 

 to If inches in length, whilst its breadth, which was almost uniform, 

 amounted to half an inch. Its free extremity was rounded and into 

 it the Fallopian tube opened abruptly. The right or impregnated 

 horn measured 5^ inches along its convex margin, whilst its posterior, 

 or attached margin, equalled that of the horn of the opposite side. 

 It will be observed, therefore, that after impregnation the alteration 

 in size of the uterus takes place in respect of the anterior or free 

 margin of the impregnated horn, the posterior or attached border of 

 the latter remaining of the same dimensions as that of the opposite 

 side. 



The impregnated horn measured 2 inches in greatest breadth and 

 presented a somewhat globular form. Subsequent to injection of 

 the uterine artery with carmine, numerous extremely tortuous vessels 

 could be readily distinguished through its peritoneal investment. 

 These vessels, which, upon opening the uterus, were seen for the most 

 part to correspond to the place of attachment of the placenta, were 

 mostly directed transversely to the long axis of the horn, and extended 



