Ihi 



Journal of Heredity 



(Formerly the American Breeders' Magazine) 



Vol. XIII, No 7. July, 1922 



CONTENTS 



A WALTZING RABBIT Leon J. Cole and Dewey G. Steele 291 



INTELLIGENCE AND RACE Paul Popenoe 295 



A BLACK LEGHORN WHICH TURNED WHITE.... F. A. E. Crew 299 



SCIENCE IN THE SCHOOL (A Review) 304 



AN ORCHARD OF CHESTNUT HYBRIDS 



J. A. Detlefsen and W. A. Ruth 305 



HOW RELATIVES ORIGINATE (A Review) 314 



BEAVER FARMING Vernon Bailey 315 



THE USE AND VALUE OF BACK-CROSSES IN SMALL-GRAIN 



BREEDING Harry V. Harlan and Merritt N. Pope 319 



GROUP, RACE AND NATION (A Review) 2,^2 



DIVERSITY OF INTERNODE INDIVIDUALS O. F. Cook 323 



A SURVEY OF THE WHOLE FIELD (A Review) . . ._. 328 



CULTURE OF CREPIS FOR GENETIC INVESTIGATIONS 



J. L. Collins 329 



MEMORIAL TO JAMES RIED ; 336 



The JOURNAL OF HEREDITY is published monthly by the 



AMERICAN GENETIC ASSOCIATION 



Publication Office, 1918-32 Harford Avenue, Baltimore, Md. 



Address all communications to the Editorial Office, 

 Box 354, Penna. Ave. Sta., Washington, D. C. 



Entered as second class matter February 24, 1923, at the postoffice at Balti- 

 more, Maryland. Acceptance for mailing at the special rate of postage 

 provided for in Section 1103, Act of October 3, 1917, authorized December 20, 

 1918. Contents copyrighted 1923 by the American Genetic Association. Re- 

 production 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. 



Date of Issue of This Number, March 10, 1923. 



