xi SEX 115 



spectacles have already enabled us to catch, offer a 

 fair hope that some day they may all be brought 

 into focus, and assigned their proper places in a 

 general scheme which shall embrace them all. 

 Then, though not till then, will the problem of the 

 nature of sex pass from the hands of the biologist 

 into those of the physicist and the chemist. 



