The 



Journal of Heredity 



(Formerly the American Breeders' Magazine) 



Vol. X, No. 5 May, 1919 



CONTENTS 



Fertile Wheat-Rye Hybrids, by H. H. Love and W. T. Craig 195 



A Freak Papaw, by C. Drieberg 207 



Population Schedule Census of 1920, by H. H. Laughlin 208 



Portraits of Early Americans, by F. A. Woods 212 



War and Genetic Values, by D. S. Jordan 223 



A Note on the Dropping of Flowers in the Potato, by IM. J. Dorsey... . 226 

 The Founders of the Art 6f Breeding— III, by H. F. Roberts 229 



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, July 15, 1919. 



