DESCRIPTION OF THE OBERATION. 



31 



bucket of cold water containing some disinfectant, or in some 

 way sterilised. 



It can readily be understood' upon reference to Figs.^ 9, 10 

 and 1 1 that if certain abnornialities .occur in connection 

 with the peritoneal fold, with: the testicle itself or its 

 appendages (the epididymis, vas deferens or spermatic cord), 

 with the inguinal canal, the gubernaculum testis, or even the 

 skin of the scrotum, a " rig " colt will probably be the result. 



F16. 11. 



Shewing testicle passing through the inguinal canal (Colin). 



A. Fold of peritoneum by which the testicle is suspended from the lumbar region ; 



B. Testicle ; C. Gubernaculum testis ; D. Inguinal ring, 



For example, the peritoneal attachment may be abnormally 

 short or abnormally long at a certain period of fcetal or colt 

 life. With the former the result might be that the testicle 

 would never descend from its position in the lumbar region but 

 become a fixture, or it might descend a little way and thus not 

 be able to reach the internal inguinal ring. If abnormally long 



1 "Traits de Physiologie Compar^e des Animaux," by Professor Colin. 



