THE AMERICAN NATURALIST [Vol.LVI 



tersexes these two overbalances in opposite directions 

 cancel each other, and since the two sets of genes are now 

 of almost exactly the same weight the point of balance is 

 between the two critical balances. Accordingly the char- 



'0 



acters of the intersex fluctuate widely with sli£ 

 mental differences, and fall into two modes corresponding 

 to the slight difference in balance between two and three 

 of the tiny fourth-chromosomes. 



Male . . 



The phenomenon of intersexuality might be expected 

 to have a reciprocal phase— namely, supersexes. If the 



