42 ANIMAL LIFE IN THE YOSEMITE 



to the food of the species, and its relation to plant life in general ; also, its 

 relation to other animals, as predator or victim. And, finally, though not 

 appearing at any definite point in the account, we attempt to point out 

 where general biological principles are illustrated. 



The facts observed have been gathered together in orderly sequence, and 

 every effort has been made to secure accuracy of expression. Where these 

 facts, thus assembled, point toward some generalization, we have felt free 

 to set it forth. At the same time, we have tried to refrain from idle 

 speculation. 



The study of natural history should develop the power of insight — 

 keenness, not only in seeing what animals do, but in determining why those 

 things are done. The interrelations existing between any animal and its 

 environment are exceedingly manifold and vital. To understand these, 

 even in some small degree, brings into play a superior type of intellectual 

 activity, and, we believe, leads to enhanced powers of perceiving and 

 solving human problems. We therefore recommend to the reader that he 

 take advantage of his opportunities to observe and infer without limit 

 beyond whatever we may have set forth herein, to the end that he find both 

 pleasure and profit. 



