The 



Journal of Heredity 



(Formerly the American Breeders' Magazine) 

 Vol. XII, No. 5 May, 1921 



CONTENTS 



THE BUD-SPORT ORIGIN OF A NEW PINK-FLESHED GRAPEFRUIT 



IN FLORIDA, by T. Ralph Robinson 195 



CAUSES OF SHEDDING IN COTTON, by O. F. Cook 199 



DEMOCRACY AND THE HUMAN EQUATION, A Review of Alleyne Ire- 

 land's Book, by Frederick Adams Woods 205 



AVERAGE HEIGHTS AND WEIGHTS OF CHILDREN UNDER SIX 



YEARS OF AGE 20cS 



A SIMPLE SYSTEM OF DESIGNATING RELATIONSHIPS, by Alexan- 

 der Graham Bell 210 



A GENETIC PORTRAIT CHART, by David Fairchild 213 



THE SECOND INTERNATIONAL CONGRESS OF EUGENICS 219 



HERITABLE CHARACTERS OF MAIZE— White Sheaths, by J. H. Kemp- 

 ton 224 



RECORDS SHOW NO RADICAL CHANGE IN SEASONS 226 



BUD VARIATION IN ELEAGNUS, by C. S. Pomeroy 227 



MEASURING HUMAN INTELLIGENCE, A Review of H. H. Goddard's 



Book "Human Efficiency and Levels of Intelligence," by Paul Popenoe ... 231 



A LIVING DOUBLE HEADED CALF, by W. M. Goldsmith 237 



UNCLE SAM'S MODEL VILLAGE. 240 



The Journal of Heredity is published monthly by the 



AMERICAN GENETIC ASSOCIATION 



Publication office, 450 Ahnaip Street, Menasha, Wis. 



Editorial and genera! 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. 



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 1921 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, September 23, 1921. 



