THE ROLE OF THE CELL ORGANS IN HEREDITY 335 



may be transmitted, involves all of the cell organs as well as a complicated 

 and orderly series of intercellular reactions and responses. These two 

 phases, the transmission of a heritage of factors and the develop- 

 ment of the organism's characters as the result of their influence, 

 must both be very much more fully known before either can be adequately 

 understood. 



To some of the more cogent evidence upon which these general con- 

 clusions are based we shall now turn. 



Bibliography at end of Chapter XVIII. 



