The Journal of 



HEREDITY 



^ monthlif puolicatiori devoted toflant^reedim 

 Animal 3reedm ami EuQenics 



JANUARY, 1918 



THE GRAFTED JUJUBE OF CHINA 



TRACING YOUR ANCESTORS 



PETALIZATION IN THE JAPANESE QUINCE 



COLORS IN VEGETABLE FRUITS 



UNUSUAL VARIATION IN CROOK-NECK SQUASH 



EVOLUTION BY HYBRIDIZATION 



SOME VARIABLE EARS OF DENT CORN 



COLOR INHERITANCE IN MAMMALS 



EXTRA TOES IN HORSE AND STEER 



A TEST FOR SUPERMEN 

 FEEBLEMINDEDNESS IN DELAWARE 



ORGAN OF THE 



AMERICAlSr' GENETIC 'ASSOCIATION 



AATASHINGTON • D.G. 

 JrintedforGireulaiiow amovt^OKembers only 



