RESULTS OF CASTRATION 



25 



about three months later the degeneration of the penis pro- 

 ceeded so far that it more or less resembled that of a pre- 

 puberally castrated rabbit (Fig. 15, D). It is of great interest 

 to notice that the penis remains sometimes almost unaltered 

 during one or two months after castration to undergo after- 

 wards a more or less rapid and almost complete atrophy of the 



Fig. 16. — Influence oj prepuberal castration on the uterus oj rabbit, 



A. Uterus and tubes of normal rabbit (Prot. Nr. 129) 8 months old. 



B. Uterus of rabbit of the same litter castrated at an age of 2 months 

 and 10 days (Prot. Nr. 127). 



distal part of the corpora cavernosa penis. We see how different 

 are the reactions of the various parts of the organism to the 

 removal of the testicles. 



Observations made on female mammals^ also showed that 

 after prepuberal castration the genital organs cease to develop. 

 The difference between the uterus of a normal and that of a 

 prepuberally castrated rabbit is very striking, both macro- 

 scopically and microscopically (Figs. 16 and 17). There is an 

 underdevelopment both of the mucosa and of the muscle 



*See the books of Biedl, Kammerer, Tandler and Gross, especially 

 Carmichael and Marshall (1907) and Marshall (1910), Ch. IX. 



