VOL XLVIII, KO. 565 



JANUARY, 1914 



THE 



AMERICAN 

 NATURALIST 



A MONTHLY JOURNAL 

 Devoted to the Advancement of the Biological Sciences with 

 Special Reference to the Factors of Evolution 



CONTENTS 



Page 



with Tobacco^ Professor E. M.'east and H. Hayes - - P fi 



II. Oynandromorphous Ants, described during the Decade, 1903-1913 



III. Shorter Articles and Discnssion : 



On the Result* of Inbreeding a Mendelian Population— A Correction and Ex- 



THE SCIENCE PRESS 

 LANCASTER, PA. GARRISON, N. T, 



NEW YORK: SUB-STATION 84 



