y 



VOL. L, HO. S95 



JULY, 1916 



THE 



AMERICAN 

 NATURALIST 



A MONTHLY JOURNAL 

 Devoted to the Advancement of the Biological Sciences ^ 

 Special Reference to the Factors of Evolution 



nd Known Correlations in Pigeons. DR. Oscab iudi 



THE SCIENCE PRESS 

 LANCASTER, PA. GARRISON, N. Y. 



NEW YORK: SUB-STATION 84 



