292 ANNUAL REPORT SMITHSONIAN INSTITUTION, 1949 
built up to the maximum possible numbers, and that a few are injurious 
and should be controlled. 
As the activities of mankind are extended, the importance of wildlife 
protection increases correspondingly, for we could not live without 
animal life and the extirmination of any form is a serious loss. Better 
understanding of animals leads to recognition of their value and there- 
fore to more interest in their protection, and the study of animal life 
as a profession, as a hobby, or merely through casual observation yields 
much pleasure. 
Norr.—All photographs are by Ernest P. Walker unless otherwise listed. 
