188 THE THEORIES OF EVOLUTION 



notions is illogical. This is why the authors of repre- 

 sentative theories have never offered any evidence 

 based on experiments or observation, nor are they 

 likely ever to offer any. We must therefore look 

 elsewhere for an explanation of the independent ap- 

 pearance of characters and of all the other facts of 

 heredity for which the representative particles seem, 

 at first glance, to account so easily. 



