Th 



e 



Journal of Heredity 



(Formerly the American Breeders' Magazine) 



Vol. VIll, No. 2 February, 1917 



CONTENTS 



An Excessive Supply of Digits Frontispiece 



Corn and Education, by Albert F. Blakeslee 51 



The Original Geneticist 57 



Constructive Aspect of Birth Control, by Robert J. Sprague 58 



Breeding Rabbits for Fur 62 



Odd Plant Malformations, by Albert A. Hansen 63 



The Present Status of Instruction in Genetics, by E. E. Barker 69 



Annual Business Meeting of the A. G. A 71 



Jewish Eugenics (a Review) 72 



A Treatise on Poultry Breeding . . . 74 



Bud Variation in Lemons, by A. D. Shamel 75 



Annual Meeting in New York Successful 81 



"Somatic Segregation," by E. B. Babcock and Francis E. Lloyd 82 



New Publication Devoted to Mental Hygiene 89 



Material for Plant Breeders 89 



Selection in Pure Lines, by C. Fruwirth 90 



Is Cancer Inheritable? 95 



The Treatment of Criminals 95 



Remarkable Motion Pictures Shown 95 



Care of the Feebleminded in Germany 95 



A Polydactylous Family, by Edith S. Atwood and Clara P. Pond 96 



The Elementary Biology of Sex 96 



The Journal of Heredity is published monthly by the American Genetic 

 Association (formerly called the American Breeders' Association) for the benefit 

 of its members. Canadian members who desire to receive it should send 25 cents 

 a year, in addition to their regular membership dues of $2, because of additional 

 postage on the magazine; foreign members pay 50 cents extra for the same 

 reason. Subscription price to non-members, $2.00 a year, foreign postage extra; 

 price of single copies. 25 cents. 



Entered as second-class matter February 24, 1915, at the postofBce at Washing- 

 ton, D. C, under the act of August 24, 1912. Contents copyrighted 1917 by the 

 American Genetic Association. Reproduction of articles or parts of articles 

 permitted provided proper credit is given to author and to the Journal of Heredity 

 (Organ of the American Genetic Association), Washington, D. C. 



Date of issue of this number, January 25, 1917. 



