The 



Journal of Heredity 



(Formerly the American Breeders' Magazine) 



Vol. IX, No. 7 November, 1918 



CONTENTS 



The Chinese Petsai as a Salad, by David Fairchild 291 



Heredity of Stature in Man 295 



Approachinig Extinction of the Mayflower Descendants, by S. J. 



Holmes and C. M. Doud 296 



Bud-sport in the Washington Navel Orange, by Robert W. Hodgson . . 301 



Fighting Itistinct Is Not the Warring Instinct, by Alleyne Ireland .... 303 



Fruiting of Apple Trees Every Other Year, by B. S. Brown 304 



Country Versus City Boys 306 



Testing Pure-bred Cows in New South Wales 307 



Orange-like Fruit from a Lemon Tree, by Thomas W. Brown 308 



Standardized Tests and Mental Inheritance, by June E. Downey 311 



A Fruiting Orange Thorn, by A. D. Shamel and C. S. Pomeroy, 316 



Lemon Orchard from Buds of Single Selected Tree, by A. D. Shamel . . 319 



How Sorghum Crosses Are Made, by T. E. Nafziger 321 



Prolification in a Double Flower, by Peter Bisset 324 



Natural Crossing in Wheat, by H. K. Hayes 326 



Will Not Morality Necessarily Improve? by F. A. Woods 331 



Fecundity in Domestic Fowl 333 



NOTE 



Instead of raising the price of membership, and in ordsr 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 will contain 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 postofiice 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, December 12, 1918. 



