Tlic Rcproduitive Oro;ajis 



337 



the epididymis lies upon its external face, above the gland. The 

 relation as to elevation between the testicle and epididymis be- 

 comes reversed. In the abdomen, processus vaginalis and in- 

 guinal canal, the epididymis is beneath the testicle and precedes 

 it in the descent but, when the testicle finally reaches the Ijottom 

 of the scrotum, it perfornrs a partial re\'olution for\^'ards on its 

 long axis, which re\'erses the relation and brings the epididymis 







I-ic. 56. Genitourinary system of a foal, 24 brs. olil, to illustrate descent 

 of testicles and beha\ior of ruptured uinbdic arteries. 



The central portion of the abdominal floor has been ])artly excised and 

 laid back. vSeen from below. 



T, Testicle. A, Artery of testicle. (.;, Cubernaculum testis. V, Vas def- 

 erens. I!, Bladder. UA, Ruptured ends of nmbilic arteries retracte.l within 

 abdomen. P, Processus vaginalis. UV, Umbilic artery. 



