36o 



INTERNAL SECRETIONS 



B 

 i ov. 



C 



2 ov. 



Fig. 127. — Experimental hermaphroditism in guinea pigs. (Operated by 

 Dr. W. Krause by the intratesticnlar method of Sand.) 



A. Normal male (610 gr.). 



B. Male (415 gr.) with both testicles in situ and half an ovary en- 



grafted into one testicle about six months previously at an age of 

 2-3 weeks and at weight of 160 gr. 



C. Male (450 gr.) with two whole ovaries engrafted into the testicles 



in situ about six months previously at weight of 170 gr. 



— Photos of Vesnjakov. 



