THEORY OF SEX ITS NATURE AND ORIGIN. 1 33 



outlined at the beginning of the chapter, — (i.) that the penetrat- 

 ing insight of Rolph, of females as the more, and males as the 

 less nutritive, is fully justified; (2.) that the view of Minot of the 

 differentiation of both sex-cells from a primitive hermaphroditism 

 becomes similarly developed, and acquires greater definiteness ; 

 while (3.) the view of Brooks, which ascribes variability primarily 

 to the males, at least acquires considerable suj)port from the inter- 

 pretation of the males as preponderatingly katabolic. For it is 

 rather in connection with the destructive changes of ])rotoplasm 

 than with the constructive, that variations might be expected to 

 arise. 



