I~i E 

 JOURJMAL OF 



HEREDITY 



A monthly publication devoted to Plant Breeding, Animal 

 Breeding and Eugenics 



DIFFERENTIAL FECUNDITY 



Walter F. Willcox 



ALASKA'S REINDEER INDUSTRY 



Levi Chubbuck 



THE EXISTENCE OF SPECIES 



O. F. Cook 



COLLECTING IN TURKESTAN 



Frank N. Meyer 



BREEDING KARAKUL SHEEP 



Dr. C. C. Young 



THREE NEW NUTS 



The Editor 



INFLUENCE OF SOURCE OF SEED 



Arnold Engler 



EUGENICS IN THE COLLEGES 



ORGAN OF THE 



AMERICAN GENETIC ASSOCIATION, Washington, D. C 



Printed for Circulation among Members Only 



Vol. V, No. 4 



April, 1914 



