CHAMELEONS IN FUR AND FEATHER 



HE colour of things in nature has 

 been the subject of many vol- 

 umes and yet it may be truthfully said 

 that no two naturalists are wholly agreed on the 

 interpretation of the countless hues of plants and 

 animals. Some assert that all alleged instances 

 of protective colouring and mimicry are merely the re- 

 sult of accident; while at the opposite swing of the 

 pendulum we find theories, protective and mimetic, for 

 the colours of even the tiny one-celled green plants w r hich 

 cover the bark of trees ! Here is abundant opportunity 

 for any observer of living nature to help toward the so- 

 lution of these problems. 



In a battle there are always two sides and at its finish 



31 



