308 THE STOCK OWXEk's ADVISER. 



of the cord, and terminates toM'ards the superior part of the 

 testicles in fibers extending only over its external surface. This 

 muscle rests on the fibrous coat, another envelope, of the testicle 

 and cord. This muscle sometimes gives the operator some 

 trouble in young colts, as it has the power of retracting and 

 carrying the testicle into the depth of the groin. 



The fibrous testicular envelope, just referred to, giving attach- 

 ment to the cremaster, is a thin membranous bag, elongated like 

 the neck of a bottle around the spermatic cord which it en- 

 velops, and dilated below, in order to enclose the testicle. 

 Adhering to this coat internally is the serous coat. This last 

 membrane is a duplicate of the peritoneum. 



The testicles are suspended at the end of the spermatic cord, 

 and surmounted upon their superior border by the epididymis, 

 the first part of the deferent canal, which is folded upon itself. 

 This conveys the products of the secretion of the testicle into the 

 vesiculsB seminales, lodged in the pelvic cavity. The spermatic 

 cord is formed by the spermatic artery, the deferent canal, and 

 the circumvolutions of the small testicular artery.' 



METHODS. 



The methods have been numerous. I shall simply refer to the 

 older and dwell more largely on the more recent ones. 



SIMPLE EXCISION. 



This is one of the oldest modes of operation, and though to a 

 great extent discarded, still finds its application in the smaller 

 animals. 



SCRAPING. 



This operation is said to have originated in India. It is but a 

 modification of the preceding method, the only difference being 

 the use of a dull knife instead of a sharp one to separate the 

 coats of the artery. 



