The 



Journal of Heredity 



(Formerly the American Breeders' Magazine) 

 Vol. XIII, No. 4 April, 1922 



CONTENTS 



CHANTECLER POULTRY Leon J. Cole 147 



SOCL'\L HYGIENE (A Review) 152 



LOUIS TRABUT, BOTANIST AND PLANT BREEDER 



Thomas H. Kearney 153 



BIOLOGY VS. BOLSHEVISM (A Review) 160 



BROTHERS IN RUGBY FOOTBALL H. W. Jack 161 



AMERICAN DEGENERATION (A Review) 162 



AN HISTORIC ORANGE TREE Beverly T. Galloway 163 



TALKS TO MOTHERS 166 



BIOLOGICAL FACTS UNDERLIE SOCIAL QUESTIONS 166 



EFFECT OF THE AGE OF SIRE AND DAM ON THE QUALITY OF 



OFF-SPRING IN DAIRY COWS C. L. Allen 167 



MUSICAL ABILITY (A Review) 176 



INHERITANCE IN THE SUMMER SQUASH 



Edmund W. Sinnott and George B. Durham 177 



BOOKS RECEIVED 186 



BREEDING OATS RESISTANT TO STEM RUST Fred Griffee 187 



INTELLIGENCE AND SCHOOLING Paul Popenoe 190 



The Journal of Heredity is published monthly by the 



AMERICAN GENETIC ASSOCIATION 



Publication office, 450 Ahnaip Street, Menasha, Wis. 



Editorial and general offices, Washington, D. C. 



Entered as second-class matter May 13, 1921, at the postoffice at Menasha, 

 Wisconsin. Acceptance for mailing at the special rate of postage provided for in 

 Section 1103, Act of October 3, 1917, authorized Dec. 20, 1918. Contents copy- 

 righted 1922 by the American Genetic Association. Reproduction of articles or parts 

 of articles permitted only upon request, for a proper purpose, and provided due credit 

 is given to author and to the JOURNAL OF HEREDITY (Organ of the American 

 Genetic Association, Washington, D. C), Menasha, Wisconsin. Address all com- 

 munications to the Association's office at Washington, D. C. 



Date of issue of this number, November 9, 1922. 



