TWENTIETH CENTURY TEXT-BOOKS 



ANIMAL LIFE 



A FIRST BOOK OF ZOOLOGY 



BY 



DAVID STARR JORDAN, PH. D., LL. D. 



\ N 



PRESIDENT OF LELAND STANFORD JUNIOR UNIVERSITY 

 AND 



VERNON L. KELLOGG, M.S. 



PROFESSOR IN LELAND STANFORD JUNIOR UNIVERSITY 



NEW YORK 

 D. APPLETON AND COMPANY 



1912 



