90 INSECT BEHAVIOR 



gained sufficient strength and size to push aside and starve the new- 

 born wasps! 



Thus nature modifies the birth rate of the cannibals, sending these 

 checkered enemies to destroy them, lest some day they exterminate 

 the useful little flower and humble bees, whose mission in life it is 

 to blend the pollens of a billion blossoms and make our world a 

 land of plenty. 



