Th 



e 



Journal of Heredity 



(Formerly the American Breeders' Magazine) 



Vol. VIII, No. 5 May, 1917 



CONTENTS 



A Bird Without Wings Frontispiece 



Tlie Utility of Death, by F. H. Pike 195 



The Evidence of Evohition (Review of a book by William Berryman 



Scott) 199 



Protective Coloration in Seeds of Bolivian Maize, by J. H. Kempton. 200 



Experience with Loganberry Hybrids 202 



Self-Sterility, by C. W. Moore 203 



Coeducation and Eugenics, by Howard J. Banker 208 



The Offspring of Marriages of the Deaf (Review of a book by 



Alexander Graham Bell) 211' 



The Problein of Handedness in Education 214 



A Horseman's Views on Eugenics 215 



Hidden Feeblemindedness, by E. M. East 215 



Marriage Rate of Iowa State College Women, by J. C. Blumer. . . . 217 



The Lethal Factor in Yellow Mice 217 



The Cost of Defectives to the Nation 217 



A Bud Variation of Euonymus, by A. D. Shamel 218 



A Valuable Text-book of Animal Breeding (Reviev* of a book by F. B. 



Mumford) 220 



Families of American Men of Science 220 



Tlie Number of Chromosomes in Man 220 



The Sweating Apparatus 221 



Research in Plant Genetics 223 



A New Handbook of Mendelism (Review of a book by James Wilson ) . 223 

 A Posthumous Book by Darbishire (Review of a book by A. D. 



Darbishire) 223 



Color Inheritance in IMaminals. by Sewall Wright 224 



Does Racial Intermarriage Lead to Sterility? 235 



A Valuable Variety of Barley 235 



Flower Buds and Leaf Buds 236 



The Hairs of Nettles 240 



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, April 25, 1917. 



