3^4 



THE PHYSIOLOGY OF REPRODUCTION 



It is xxvll known that caponisation or the removal of the testes in 

 fnwls arrests the development of the comb and some other secondary 



Fit;. 7*. -Herdwick wether cas- 

 trated when four months old. 

 The horns are the same length 

 as they were at the time of 

 castration. (From Marshall and 

 Hamim-no!, ./..,/,-. ;/' 



FIG. 79. Herdwick wether cas- 

 trated five months after birth. 

 The horns ceased to grow after 

 castration, (From Marshall and 

 Hammond, Join: ;/' /'////.??>//.) 



Kn.. HO. Herdwick ram lamb Fi<;. HI. Herdwick wether from 



from which one testis was re- which the testes were removed 



moved four months after birth. four months after birth but the 



The horns continued to grow epididymes retained. The horn 



and were symmetrical. (From growui ceased after castration. 



Marshall and Hammond, .////. (From Marshall and Hammond, 



malt- ' -ha rasters which are normally present in the cock. Recent 



upon this subject are described below in dealing with 



especially in the legs. For accounts of other anatomical differences in eunuchoid 

 persons, see Duckworth, ./<//. of A,it. ,/. /'////.., vol. xli., 1906, and Tandler 

 and <;ros.s (A ,;/,./. BiUmet.-Jftei^ vol. xxvii., 1!)<H)). The latter authors discuss 

 tin- ir--ner.il effects of castration on the organism. See also (leddes, "Abnormal 

 Bone <!rowth in the Alwence of .Functioning Testicles," J'roc. Roy. Soc. E<l'n>., 

 vol. xxxi., l!lo. 



