THE FEMALE GENERATIVE OEQANS. 



437 



nants have the placenta formed by a number of cotyledons; 

 the walls of the vagina contain rudimentary tubes, canals 

 of Gaertner ; the labia are thick, and from the inferior 

 commissure hangs a tuft of hair. The pelvis of the cow 

 is so arranged that the expulsion of the foetus is more 

 tardy than in the mare. The ischium is very large and 

 expanded, and forms a very considerable part of the pelvic 

 wall, the sacro-sciatic ligament being correspondingly 

 shortened. The posterior part of the ischial junction 

 forms, with the remainder of the symphysis, an oblique 

 angle superiorly, and thus the pelvic outlet is diminished 

 in size, and placed above the general level of the floor of 

 the cavity. The pelvic passage of the cow is long. 



Fig. 91. Female generative organs, a. Body of uterus, h. Its external os. 

 c. Its horns, d. Fallopian tubes, e. Ovaries. /. Broad ligaments. 

 g. Bladder, h. Meatus urinarius externus. i. Cavity of vagina. (After 

 Simonds.) 



The ovaries of the cow are smaller than those of the 

 mare ; they are liable to only two forms of disorder. 



Deopsy of THE OvAEiES is sccn in old animals, and 

 especially in those which have not been impregnated. It 



