The 



Journal of Heredity 



(Formerly the American Breeders' Magazine) 



Vol. VIII, No. 9 September, 1917 



CONTENTS 



The Sheep Conies Back 387 



Studies in Animal Behavior (Review of a Book by S. J. Holmes) 393 



The Young IVIother 394 



The Manehu Emperor K'ang Hsi as a Plant Breeder 396 



Ancestry of the Cat 397 



The Further Evolution of Man (Review of a Book by W. Hall Calvert) . 399 



The Parents of Great IVIen 400 



Plant -breeding in Russia 408 



Muscadine Grape Breeding, by Charles Bearing 409 



Peculiarities of Conformation in Singers 424 



Select Army Aviators by Test, Not by Edueation, by Roswell H. 

 Johnson 425 



Color Inheritance in Mammals: III, the Rat, by Sewall Wright 426 



Pitcher-leaved Ash Trees, by George H. ShuU 431 



The Disappearance of the Male Mononch 432 



The Journal of Heredity is published monthly 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 1917 by the 

 American Genetic Association. Reproduction of articles or parts of articles 

 permitted provided proper credit is given to author and to the Journal of Heredity 

 (Organ of the American Genetic Association), Washington, D. C. 



Date of issue of this number, August 25, 1917. 



