JOWL OF MOILTIAL RESEARta 
Vol. XXVII Washington, D. C., January 5-March 29,1924 No. 13 
CONTENTS 
Page 
Physiological Studies on Apples in Storage. J. R. Magness and H. C. Diehl 
(15 text figures). i 
A Study of the Effects of Pumpkin Seeds on the Growth of Rats. Benjamin 
Masurovsky (2 text figures). 39 
The Argus Tortoise Beetle. F. H. Chittenden (4 text figures; 1 plate). 43 
Seed-Color Inheritance in Certain Grain-Sorghum Crosses. John B. Sieglinger. 53 
The European Com Borer, Pyrausta nubilalis Hbn., versus the Com Earworm, 
Heliothis obsolete Fab. George W. Barber (i plate). 65 
Anchorage and Extent of Com Root Systems. James R. Holbert and Ben¬ 
jamin Koehler (i text figure; 5 plates). 71 
Adjusting Yields to Their Regression on a Moving Average, as a Means of Cor¬ 
recting for Soil Heterogeneity. Frederick D. Richey (2 text figures). 79 
Soybean Mosaic; Seed Transmission and Effect on Yield. James B. Kendrick 
and Max W. Gardner. 91 
Insecticidal Effect of Cold Storage on Bean Weevils. A. O. Larson and PEREZ * 
Simmons... 99 
The Effect of Rust Infection upon the Water Requirement of Wheat. Free¬ 
man Weiss. 107 
Photoperiodism in Relation to Hydrogen-Ion Concentration of the Cell Sap and 
the Carbohydrate Content of the Plant. W. W. Garner, C. W. Bacon, and 
H. A. Allard (10 text figures; 2 plates). 119 
On the Anatomy of the Sweet Potato Root, with Notes on Internal Breakdown 
Ernst Artschwager (6 text figures; 4 plates). 157 
The Influence of Low Temperatures and of Disinfectants on the Eggs of Ascaris 
lumbricoides. Eloise B. Cram. 167 
The Black-Bundle Disease of Com. Charles S. Reddy and James R. 
Holbert (4 text figures; 6 plates). 177 
Changes in Hydrogen-Ion Concentration Produced by Growing Seedlings in 
Acid Solutions. Jehiel Davidson and Edgar T. Wherry. 207 
The Nutritive Properties of Wild Rice. Cornelia Kennedy (2 text figures).. 219 
A Bacterial Blight of Gladioli. Lucia McCulloch (2 plates). 225 
The Blooming of Wheat Flowers. C. E. Leighty and W. J. Sando (2 text 
figures). 231 
The Effect of Sodium Hydroxid on the Composition, Digestibility, and Feeding 
Value of Grain Hulls and Other Fibrous Material. J. G. Archibald. 245 
Tissue Fluids of Egyptian and Upland Cottons and Their F! Hybrid. J. Arthur 
Harris, Zonja Wallen Lawrence, W. F. Hoffman, John V. Lawrence, 
and A. T. Valentine (i text figure; 1 plate). 267 
Selective Fertilization in Cotton. Thomas H. Kearney and George J. 
Harrison. 329 
The Effect of Fertilizers on the Development of Stem Rust of Wheat. E. C. 
Stakman and O. S. Aamodt (4 text figures; 3 plates). 341 
Morphological and Physiological Studies on the Resistance of Wheat to Puccinia 
graminis tritici Erikss. and Henn. C. R. Hursh (i text figure; 2 plates).... 381 
The Function of Grit in the Gizzard of the Fowl. B. F. Kaupp (i plate). 413 
The Association of Manganese with Vitamins. J. S. McHargue (i plate).... 417 
Experiments with Flag Smut of Wheat and the Causal Fungus, Urocystis tritici 
Kcke. Marion A. Griffiths (i text figure; 3 plates). 425 
Studies on the Parasitism of Urocystis tritici Koern., the Organism Causing 
Flag Smut of Wheat. Robert J. Noble (2 text figures; 3 plates). 451 
Inheritance of Petal Spot in Pima Cotton. Thomas H. Kearney (i plate)... 491 
The Migration of the Aphididae and the Appearance of the Sexual Forms as 
Affected by the Relative Length of Daily Light Exposure. S. Marcovitch. . 513 
Breeding, Feeding, and Other Life Habits of Meadow Mice (Microtus). Vernon 
Bailey (3 plates). 523 
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