The =ovaries= of the cow are much smaller than those of the mare,
measuring usually about one to one and a half inches (ca. 3 to 4 cm.) in
length, and a little less than an inch (ca. 2 cm.) in thickness in their
largest part. They are oval in form, pointed at the uterine end, and
have no ovulation fossa. They are situated usually a little above the
middle of the lateral margin of the pelvic inlet in the non-pregnant
subject, but may be found a little further forward. They are thus about
16 to 18 inches (ca. 40 to 45 cm.) from the vulva in a cow of medium
size. The greater part of the surface of the gland is covered with
germinal epithelium, the peritoneal epithelium being limited to a narrow
zone along the attached border. Follicles of various sizes are often
seen projecting from the surface, as well as corpora lutea; a corpus
luteum verum has a pronounced yellow color, and may reach a width of
half an inch or more (ca. 1 to 1.5 cm.).
[Illustration: