40 CASTRATION. OF CRYPTORCHID HORSES. 



800 living acari in the contents of a cyst in the right testicle. 

 " To account for their presence in the cyst Dr Trouessarti (of 

 Paris) suggests that an egg bearing female was adhering to the 

 catheter which the patient had passed in India (some years 

 before), that she attached herself to the urethral mucous mem- 

 brane, entered one of the ejaculatory ducts, and followed the 

 vas deferens till she reached the epididymis, where she probably 

 commenced to lay her eggs ; the infarct thus produced causing 

 the rupture of the mucous membrane and the formation of the 

 cyst." 1 



Adhesions between the testicle and peritoneum must be 

 broken down with the fingers. 



Lastly, one must not forget the curious shapes assumed by 

 some testes (see Fig. 12); they are often, when in the inguinal 

 canal or abdomen, no larger than a walnut, even in big horses 

 (see Fig. 21), and at times the epididymis may be alone in the 

 canal and the remainder of the testicle in the abdomen.^ 



Untoward Sequelae. — Of course one must not overlook the 

 liability to accidents, such as fractures, and those which may 

 happen during any operation which involves casting. Other 

 untoward events likely to happen are those of haemorrhage 

 from injury to some of the large inguinal veins, descent of the 

 bowel, or death from shock and exhaustion if the animal is 

 kept on the ground too long. 



Amongst subsequent unfavourable results are those of colic, 

 descent of omentum or bowel (hernia), peritonitis, septicaemia, 

 excessive swelling, the formation of an abscess, and paraphi- 

 mosis. 



If the testicle is not found after half an hour's search it is a 

 good plan to critically examine the condition of the patier\t 

 before proceeding further. It may be necessary to remove all 

 restraint and resort to the careful use of stimulants, such as 

 strong ammonia or amyl nitrite, to the nostrils, and ether or 



1 "Lancet," 23rd August 1902. 



2 "Veterinary Record," Vol. XV., page 190 (Bower and Hobday). See Appendix, 

 Cases 13 and 19. 



