INDEX FOR VOL. IX 



Journal of He 



Absence of Xenia in Ostrich Eggs. J. E. Duerden. 243. 

 Adler, Byron D.. and E. D. Ball. Factors Affecting 



Egg Production, 138. 

 Advertising New Plant Foods. David Fairchild, 15.S 

 Agricultural Census, Proposed South African, 173. 

 Alcohol as a "Racial Poison," 32 

 Ancestors. Tracing Your. Eben Putnam, 8. 

 Anomaly of Wheat Anthers, An. S. A. Anthony, 166 

 Another Chance for the Filbert, I.S8 

 Another Hen That Crowed. William H. Gates, 343 

 Anthony. S. A. An Anomaly of Wheat Anthers, 166 

 Apple Trees. Fruiting of. Every Other Year. B. S. 



Brown, 304 

 Approaching Extinction of the Mayflower Descendants, 



The. S. J. Holmes, C. M. Doud. 296 

 Army Medical Museum, Additional Facilities for. 



Needed, 124 

 Artificial Hybrids between Pike and Pickerel. G. C. 



Embody, 253 

 Avocados as Food in Guatemala. Wilson Popenoe, 99 



Babcock. E. B., and R. E. Clausen. Fecundity in 

 Domestic Fowl, 333 

 Review of Book by. Genetics in Relation to Agricul- 

 ture, 361 



Babies, Why the. Die. The Editor. 62 



Ball, E. D., and Byron D. Adler. Factors Affecting Egg 

 Production, 138 



Barker, E. Eugene, and R. H. Cohen. Variability in 

 the Radish, 357 



Beans in Manchuria, Improvement of, 160 



Bee Keeping May Increase the Cotton Crop. Rowland 

 M. Meade, 282 



Belling. John. Lethal Factors and Sterility, 161 

 Selection of Plant-Breeding, 95 



Birth Rate, Decline of, in Hungary, 85 



Birth Rate in Germany and Hungary. Lowered. 281 



Bisset. Peter. Prolification in a Double-Flowered Form 

 of Calendula Officinalis. 323 



Blood-Orange Strain, A Dry. A. D. Shamel, 174 



Breeding, Reciprocal, in Tomatoes. Byron E. Halsted, 

 169 



Breeding New Castor Beans. Orland E. White. 195 



Breeding Sows Before Litters Are Weaned. 200 



Brown. B. S. Fruiting of Apple Trees Every Other 

 Year, 304 



Brown, Thomas W. Orange-Like Fruit from a Lemon 

 Tree, 308 



Bud-Sport in the Washington Navel Orange, An Inter- 

 esting. Robert W. Hodgson. 301 



Bud Variation in Dahlias. A. D. Shamel, 362 



Budding Incompatible Cottons, 181 



Butter Fat Percentage Independent of Age of Cow, 249 



Buttonball, Why the. Degenerates in Town. E. F. A. 

 Reinisch, 61 



Buttonballs, More Remarkable, 48 



Calendula Oflficinalis, Prolification in a Double-Flowered 



Form of. Peter Bisset, 323 

 Castor Beans, Breeding New. Orland E. White, 195 

 China's Trees and Ours Strikingly Alike. 272 

 Chinese Petsai. The, as a Salad Vegetable. David Fair- 

 child, 291 

 Chrysanthemum Varieties. A. D. Shamel, 81 

 Citrus Hybridization, 281 



Clausen, R. E., and E. B. Babcock. Fecundity in 

 Domestic Fowl, 333 

 Review of Book by. Genetics in Relation to Agricul- 

 ture. 361 

 Cohen, R. H., and E. Eugene Barker. Variability in the 



Radish, 357 

 Collins. G. .\. Tropical Varieties of Maize, 147 

 Color. Tooth. Polydactylism and. S. Sinha, 96 

 Color Inheritance in Mammals. Sewall Wright: 

 I — Swine. 33 

 II— The Dog. 87 

 III— The Cat, 139 

 IV— Man, 227 

 Colors in Vegetable Fruits. Byron D. Halsted, 18 

 Corinth Grajje, Girdling the, to Make it Bear, 201 

 Corn, Dent, Some Variable Ears of. A. D. Shamel, 29 



redity, 1918 



O . t-*c - "^ 



Cotton, Environmental Factors and Hereditary Differ- 

 ences Influencing Fruiting of, 372 



Cotton Crop, Bee- Keeping May Increase the. Rowland 

 M. Meade, 282 



Country Versus City Boys, 306 



Cow in Calf Deserves More Honor, The. J. J. Hooper, 

 2.50 



Cows, The Testing of Pure-Bred, in New South Wales. 

 L. T. Maclnnes, 307 



Craig, W. T.. and H. H. Love. Small Grain Investiga- 

 tions. 67 



Crime, Marriage and Insanity, Effect of War on, 365 



Dahlias, Bud Variation in. A. D. Shamel, 362 

 Decadence of Horse Breeding. Henry M. Jones, 125 

 Defectives, Laboratory Methods Needed in Handling. 



210 

 Delinquent Dullards, 44 

 Democracy and the Accepted Facts of Heredity. Al- 



leyne Ireland, 339 

 Dent Corn. Some Variable Ears of. A. D. Shamel, 29 

 Diabetes, The Influence of Heredity in, 28 

 Diathesis, Inheritance of, through Ffve Generations, 130 

 Disease, Heredity and. Charles Herrman, 77 

 Disease and Natural Selection, 374 



Dogs, Sheep-Killing Habit Among, Incurable and In- 

 fectious. V^ O. McWhorter , 381 

 Domestic Fowl, Fecundity in. E. B. Babcock, R. E. 



Clausen, 333 

 Doud, C. M., and S. J. Holmes. The Approaching Ex- 

 tinction of the Mayflower Descendants, 296 

 Downey. June E. Standardized Tests and Mental In- 

 heritance, 31 1 

 Dry Blood-Orange Strain, A. A. D. Shamel, 174 

 Duerden, J. E. Absence of Xenia in Ostrich Eggs, 343 



Earliest Man (Review of Book by F. W. H. Migeod). 117 



Ears of Dent Corn, Some V^ariable. A. D. Shamel, 29 



East, E. M., and H. K. Hay.s. .The Effect of Recessive 

 Factors, 134 



Editor, The. Why the Babies Die. 62 



Effect of Recessive Factors. The. H. K. Hays. E. M. 

 East. 134 



Effect of War on Crime, Marriage and Insanity. 365 



Egg Production, Factors Affecting. E. D. Ball, Byron 

 D. Adler, 138 



Ellwood. Charles A.. Review of Book by. An Introduc- 

 tion to Social Psychology, 17 



Embody. G. C. Artificial Hybrids between Pike and 

 Pickerel. 253 



Environment. Influence of. on Tree Growth. A. Robert- 

 son Proschowsky, 80 



Environmental Factors and Hereditary Differences In- 

 fluencing Fruiting of Cotton, 372 



Errata, 268 



Eugenics Organization Founded in Brazil, A New, 177 



Evolution, The Place of Intelligence in (Review of Book 

 by Nels Quevli), 76 



Evolution by Hybridization. E. C. Jeffrey, 25 



Extra To.s in Horse and Steer. B. O Severson, 39 



Factors Affecting Egg Production. E. D. Ball, Byron 



D. Adler, 138 

 Fairchild, David, tlardens for Plant Breeders, 112 

 Advertising New Plant Foods, 155 

 The Chinese Petsai as a Salad Vegetable, 291 

 The Grafted Jujube of China, 3 



The Testing of a New Tree Crop for Hardiness. 368 

 Fairchild. Henry Pratt (Review of Book by). Outline of 



Applied Sociology. 7 

 Families of Six Generations, 132 

 Fecundity in Domestic Fowl. E. B. Babcock. R. E. 



Clau.sen, 333 

 Feebleminded, Counting the, in New York, 285 

 Feeblemindedness in Delaware, 45 

 Fighting Instinct Is Not the Warring Instinct. Alleyne 



Ireland. 303 

 Filbert. Another Chance for the. 158 



Fofxi in War Time (Review of Book by Graham Lusk), 

 192 



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