122 A NEW THEORY OF EVOLUTION. 



evolution would uphold his theory. On the 

 contrary, the contrast between the habits of 

 different races, the new instincts in many 

 genera that are neither inherited nor trans- 

 mitted, and from their nature could not have 

 been acquired, and the difference between 

 their methods of reproduction and the ab- 

 sence of gradation between the structures 

 they build, seem in combination to prove 

 conclusively that the evolution of the Bee 

 family could not have been by the accumu- 

 lation of beneficial variations. 



