VOL XLVII, HO. 584 



DECEMBER, 1913 



THE 



AMERICAN 

 NATURALIST 



A MONTHLY JOURNAL 

 Devoted to the Advancement of the Biological Science! i 

 Special Reference to the Factors of Evolution 



I. The Fixation of Character in Organisms. Dr. fcmi 



in. Supplementary Studies on the Differential Morta 

 Weight in the Germination of Garden Beans, II. 



THE SCIENCE PRESS 

 LANCASTER, PA. GARRISON, N. t. 



HEW YORK : SUB-STATION 84 



