DISEASES OF THE GENERATIVE ORGANS, 339 



the seat of cancer, glanders, or tuberculosis, and castration 

 is requisite, though with less hope of arresting the disease. 

 Finally they may become infested with cystic tapeworms, or 

 the armed round worm (sclerostomum equinum). 



WARTS ON THE PENIS. 



These are best removed by seizing them between the 

 thumb and forefinger and twisting them off. Or they may 

 be cut off with scissors and the roots cauterized with nitrate 

 of silver. 



DEGENERATION OF PENIS PAPILLOMA, EPITHELIOMA. 



The penis of the horse is subject to great cauliflower-like 

 growths on its free end, which extend back into the sub- 

 stance of the organ, obstruct the passage of urine, and cause 

 very fetid discharges. The only resort is to cut them off, 

 together with whatever portion of the penis has become dis- 

 eased and indurated. The operation, which should be per- 

 formed by a veterinary surgeon, consists in cutting through 

 the organ from its upper to its lower aspect, twisting or 

 tying the two dorsal arteries and leaving the urethra longer 

 by half an inch to one inch than the adjacent structures. 



EXTRAVASATION OF BLOOD IN THE PENIS. 



As the result of kicks, blows, or of forcible striking of the 

 yard on the thighs of the mare which it has failed to enter, 

 the penis may become the seat of effusion of blood from one 

 or more ruptured blood vessels. This gives rise to a more or 

 less extensive swelling on one or both sides, followed by some 

 heat and inflammation, and on recovery a serious curving of 

 the organ. The treatment in the early stages may be the 

 application of lotions of alum or other astringents to limit 

 the amount of effusion and favor absorption. The penis 

 should be suspended in a sling. 



PARALYSIS OF THE PENIS. 



This results from blows and other injuries, and also in 

 some cases from too frequent and exhausting service. The 

 yard hangs from the sheath, flaccid, pendulous and often 

 cold. The passage of urine occurs with lessened force, and 



