134 



THE SEX-COMPLEX 



Imperfection 

 of genital 

 ducts as 

 atavisms. 



Imperfect development of the Genital Ducts with 

 complete development of the Ovaries 



In these circumstances the genital ducts, although 

 imperfectly developed from a morphological standpoint, 

 may be functional. 



What has been said already of the causes of imper- 

 fections in the development of the ducts probably 

 does not apply to the malformations included in this 

 category : these imperfections are believed to be re- 

 versions to a lower type 1 . This interesting view 

 cannot be discussed here, as it has no special bearing on 

 our subject so far as we know at present. 



Herm- 



Irregular development of the Genital Ducts with 

 or without irregular development of the 

 Gonads (Hermaphroditism) 



This subdivision comprises an extraordinarily in- 

 aphroditism. t eres t m g series of anomalies which arise during foetal 

 life. They are grouped under the general term ' Herm- 

 aphroditism ', and I propose to consider them at some 

 length for they throw considerable light on the sex- 

 functions of the internal secretions. 



Hermaphroditism has been a subject of interest 

 from the earliest times, but it is only within the last 

 few years that the essential features of this condition 

 have been scientifically investigated and considered. 

 And in the study of hermaphroditism, in all its varieties, 

 lies our hope of discovering the factors concerned in the 

 determination of sex in the human subject subsequently 

 to fertilization. 



As already described (p. 6 et seq.), Man is originally 

 bisexual, and in the adult there is always evidence 

 structural if not functional of the recessive sex. 



In some cases the latent secondary characteristics 

 become pronounced in one or more particulars, without 



1 Jones, F. W., Lancet, 1915, vol. i, p. 1113. 



Inversion 

 different 

 from herm- 

 aphroditism. 



