The 



Journal of Heredity 



(Formerly the American Breeders' Magazine) 



\o\. X, No. 1 January, 1919 



CONTENTS 



Chimeras in Corn Hybrids, by J, L. Collins 3 



Effect of Cross-Pollination on Size, Color, Shape and Quality of 



the Apple 10 



Better American Families, by Wilhelmine E. Key 11 



New Everbearing Strawberries, by W. Van Fleet 14 



Testing New Foods, by David Fairchild 17 



Racial Problems and World Problems 28 



The Fighting Ability of Different Races 29 



Growing Medicinal Plants in America, by AUerton S. Cushman .... 32 



A Laboratory Manual of Genetics, A Review 39 



Race Mixture in Hawaii, by Vaughan MacCoughey 41 



NOTE 



Instead of raising the price of membership, and in order to meet the require- 

 ments of the War Industries Board, and also because of the drafting of the 

 whole Editorial Staff the July, August and September numbers have been 

 dropped out for 1918. Vol. IX contains only 8 instead of 12 numbers. 



The Journal of Heredity is published monthly with the exception of July, August 

 and September by the American Genetic Association (formerly called the American 

 Breeders' Association) 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 $2, because of additional postage on the magazine; foreign members pay 50 

 cents extra for the same reason. Subscription price to non-members, $2.00 a year, 

 foreign postage extra; price of single copies, 25 cents. 



Entered as second-class matter February 24, 1915, at the postoffice at Washing- 

 ton, D. C, under the act of August 24, 1912. Contents copyrighted 1918 by the 

 American Genetic Association. Reproduction of articles or parts of articles per- 

 mitted provided proper credit is given to author and to the Journal of Heredity (Or- 

 gan of the American Genetic Association), Washington, D. C. 



Date of issue of this number, March 8, 1919. 



