THE FACTORS WHICH DETERMINE SEX 697 



psycho-sexual character could be produced, associated with growth 

 of the mammae on the one hand and some development of the male 

 organs on the other. 



eg 



' 



- > 

 bc^3 



^ 2~ 

 tS 



.S- 2 



1's 



M^ 



o 



- 



If 



in- O 



bfi' 



C^ r *g 



'3 fl 



rV| tio , 



1 1 



i i pn 

 t- 53 



Moore, 1 working upon rats and guinea-pigs, has obtained results 

 in a general way similar. Like Sand, he has produced artificial 



1 Moore (A.), " On the Physiological Properties of the Gonads as Controllers of 

 Somatic and Psychical Characteristics," I., II., III., and IV., Jour, of Exp. Zool., 

 vol. xxviii., 1919, and vol. xxxiii., 1921. 



