70 TABOO AND GENETICS 



inity. These women are usually flat-breasted 

 and plain. Even though they menstruate, their 

 metabolism is often for the most part masculine 

 in character : indications of this are seen in the 

 bones which are heavy, in the skin which is 

 coarse, and in the aggressive character of the 

 mind. ... If a woman have well-developed 

 genitalia, and secondary characteristics, she 

 usually is normal in her instincts. A feebly 

 menstruating woman with flat breasts and 

 coarse skin cannot be expected to have strong 

 reproductive instincts, since she is largely mascu- 

 line in type ..." 



The glandular and quantitative explanation 

 of sex, instead of being abstruse and compli- 

 cated, brings the subject in line with the known 

 facts about inheritance generally. The dual 

 basis for femaleness and maleness in each 

 individual simply means that both factors are 

 present, but that only one expresses itself fully. 

 The presence of such a dual basis is proved by 

 the fact that in castration and transplantation 

 experiments both are exhibited by the same 

 individual in a single lifetime. In the case of 

 the Free-Martin cattle, even the female sex- 

 glands are modified toward the male type to 

 such an extent that they were long mistaken 

 for testes. The same applies to some glands 

 found in human " hermaphrodites," as Dr 

 Bell's plates show. 



