374 The American Naturalist. [April 
In a chapter relating to protective resemblances will be found an 
account of several examples of animals which have apparently 
acquired a resemblance to their surroundings by the transference of 
pigment to their bodies in their food. 
The list of illustrations comprises four very attractive colored plates 
and thirty-six wood cuts, each of which repay study. 
We reproduce three of these; one that represents color harmony 
Fic. 2. 
The Polytmus humming bird; 
lower figure the male; the upper 
the female. 
Fics’ $ 
The male argus pheasant. 
with the environment in the winter pelage of the stoats; and two 
showing similar feather developments in the tails of the Polytmus 
humming bird and of the Argus pheasant, in America and Asia 
respectively. 
