The 
Journal of Heredity 
(Formerly the American Breeders’ Magazine) 
VoL. XI, No. 8 NOVEMBER-DECEMBER, 1920 
CONTENTS 
A New Hybrid—The Katharine Blueberry, by Frederick V. Coville. . Frontispiece 
Is Race Suicide Possible? by AlexanderGrahamBell..................... 339 
A Hen Which Changed Color, by William A. Lippincott ..................... 342 
Heritable Characters of Maize—Zigzag Culms, by William H.Eyster......... 349 
Better American Families—IV, by Wilhelmine E.Key ...................... 358 
Hereditary Trades, by American Red Cross...... . 363 
Inheritance in Crosses of Dairy and Beef Breeds of Cattle, be John ¥ W. Geged 365 
A Herd of Albino Cattle, by J. A. Detlefsen.............0 0.0.0.0 eee ee, 378 
Deterioration in Some Horticultural Varieties Through Deficient Artificial 
Selection, by H..H. M. Bowman... ... - 0.525 ccs centee cane setenses 380 
Meeting of Geneticists Interested in Agriculture......................... 384 
Second International Eugenics Congress.................. 0.0.00 eu euee 384 
The JouRNAL OF HEREDITY is published monthly by the American Genetic Ass'n. 
Publication office, 450 Ahnaip Street, Menasha, Wis. 
Editorial and general offices, Washington, D. C. 
The JouRNAL oF HEREDITY is published by the American Genetic Associa- 
tion 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 $3.00, 
because of additional postage on the magazine; foreign members pay 50 cents extra 
for the same reason. Subscription price to non-members, $3.00 a year, foreign post- 
age extra; price of single copies, 35 cents. 
Application has been made for entry as second-class matter at the postoffice at 
Menasha, Wisconsin. Contents copyrighted 1921 by the American Genetic As- 
sociation. Reproduction of articles or parts of articles permitted only upon request, 
for a proper purpose, and provided due credit is given to author and tothe JOURNAL 
oF Herepity (Organ of the American Genetic Association, Washington, D. C.), 
Menasha, Wisconsin. 
Date of issue of this number, April 19, 1921. 
