THE GERM-PL A- M THEORY 



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separated into two kinds of ids, bo thai the germ-plasm oi tl 

 species must contain four kinds of Ms. 



I might cite many more casts in regard to which the assumpl 

 of two or more kinds of determinants seems imperative, but I beiii 

 that what has 1kh.ii said is enough i" enable any one to think out 

 other cases for himself. 



B b 2 



