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Journal of Heredity 



Vol. XIV, No. 6 September, 1923 



CONTENTS 



HERITABLK CHARACTERS IN MAIZE— XIV— BRANCHED EARS 



J. H. Kempton 243 



A TWO-HEADED LAMB John Robertson 252 



BIOLOGY IN HUMAN PROGRESS O. E. Cook 25.3 



GLANDS AND THEIR FUNCTION (A Review ) 260 



THE ECONOMIC VALUE OE PURE-BRED CATTLE 2(52 



TWO CORRECTIONS 262 



MENDELIAN INHERITANCE IN POULTRY (A Review) 2fi3 



PRODUCTION OF DOUBLE CONE FLOWER David Griffiths 265 



DELAYED GERMINATION AND THE ORIGIN OF FALSE WILD 



OATS R. J. Garber and K. S. Quisenberry 2(57 



EUGENICS IN FRANCE (A Review ) 275 



THE LIMITATIONS AND PROMISES OF EUGENICS 



Robert K. Nabours 277 



A GUIDE BOOK TO HEALTH (A Review) 288 



The JOURNAL OF HEREDITY is published monthly by the 



AMERICAN GENETIC ASSOCIATION 



At 1918-32 Harford Avenue, Baltimore, Md., and Washington, D. C. 



Address communications regarding editorial matters and the business management of the 

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



Entered as second class matter February 24, 1923, at the post office 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, Washington, D. C. 



Date of Issue of This Number, October 5, 1923. 



