64 THOSE OTHER ANIMALS. 



to be slain. The closest observers have been unable to 

 detect any signs of playfulness or of any other form of 

 enjoyment in the aphis. Its existence is as monotonous 

 as that of the vegetable the juices of whiclv it drinks, and 

 from the juices of which it is popularly believed to have 

 sprung. 



