The Bumble-Bee Fly 



whether clad in drab or motley, is admitted to 

 the burrow directly she makes herself useful 

 to the community. The mimicry of the Bum- 

 ble-bee Fly, which was said to be one of the 

 most conclusive cases, is, after all, a mere 

 childish notion. Patient observation, continu- 

 ally face to face with facts, will have none of 

 it and leaves it to the arm-chair naturalists, 

 who are too prone to look at the animal world 

 through the illusive mists of theory, 



275 



