ISO ROYAL SOCIETY OF CANADA 



If we substitute for Darwin's gemmules the molecules of iron- 

 holding nucleo-protein formed in the somatic cells we have a new and 

 tenable modification of his Theory of Pangenesis. This modification 

 does not depend for its value on the inheritance of acquired characters. 



Interpreted in this way Pangenesis as a theory of heredity is more 

 in accord with the facts of heredity and of biochemistry and physiology 

 than any other that has been as yet advanced. Accordingly the one of 

 Darwin's cherished views which has hitherto failed to find acceptance is, 

 after all, in my opinion, a demonstration of keen and far-reaching vision 

 on his part. 



