Tsych. 
PL CDE. 
THE EVOLUTION OF 
ANIMAL INTELLIGENCE 
BY 
S. J. HOLMES, Ps. D. 
ABSOCIATE PROFESSOR OF ZOOLOGY IN 
THE UNIVERSITY OF CALIFORNIA 
oa \ 
i v UA 

FM 1 hte 
Pa 
4 
NEW YORK 
HENRY HOLT AND COMPANY 
