Jan. 6-Mar. 31, 1923 
Index 
1015 
Page 
pasture, burning and its effects. 634-637 
seed, content of iron and manganese.397,399 
seed-germination temperatures.296 
_ , . 297* 299-314.322,323,327-33* 
Grasshoppers, parasite, Agamermis decaudata, 
life history and description.923-926 
Gray Mold of Castor Bean: G. H. Godfrey.. 679-716 
Greenhouse- 
temperature and moisture studies of Gib- 
berella saubinetii . 844-858 
treatment of soils for lettuce drop_645,652-653 
Greenhouses, geranium leafspot occurrence in 
the Eastern States.361-372 
Greensand— 
poisonous, cause of toxicity. 223-228 
solutions, analyses. 224, 225,227 
Ground nut, growing, experiments with day¬ 
light of different lengths.892-893,897 
Growth phenomena, relation to length of day, 
water supply, etc.914-917 
Growth, promotion, substance produced by 
Azotobacter. 825-831 
Guignardia bidwellii , studies .. 747, 748 
Halbersleben, D. I,., and Mussehl, F. E.: In¬ 
fluence of the Specific Gravity of Hens’ 
Eggs on Fertility, Hatching Power, and 
Growth of Chicks. 717-720 
Hall, Maurice C., and Shillinger, Jacob E.: 
Miscellaneous Tests of Carbon Tetrachlorid 
as an Anthelmintic. 163-192 
Harlan, Harry V., and Pope, Merritt N.: 
Water Content of Barley Kernels during 
Growth and Maturation. 333-360 
Harrington, George T.: 
Forcing the Germination of Freshly Har¬ 
vested Wheat and Other Cereals. 79-100 
Respiration of Apple Seeds. x 17-130 
Use of Alternating Temperatures in the 
Germination of Seeds. 295-332 
Harrington, George T., and Crocker, William: 
A New and Efficient Respirometer for Seeds 
and Other Small Objects, Directions for 
Its Use. 101-116 
Structure, Physical Characteristics, and 
Composition of the Pericarp and Integu¬ 
ment of Johnson Grass Seed in Relation 
to Its Physiology... 193-222 
Harrington, George T., and Hite, Bertha C.: 
After-ripening and Germination of Apple 
Seeds. 153-161 
Harris, F. S., and Yao, H. H.: Effectiveness 
of Mulches in Preserving Soil Moisture .. 727-742 
Hay, yield, relation to burning of pastures. 639-641 
Helianthus spp., growing, experiments with 
daylight of different lengths.875,883 
Heliftmthosporium spp., cause of wheat 
rosette, investigations. 784-788 
Hemp seed, content of iron and manganese. 398,399 
Hen flea, biological notes.. 1007-1009 
Hensel, R. L.: Effect of Burning on Vegeta¬ 
tion in Kansas Pastures. 631-644 
Heredity, swine. 557-582 
Heterakis spp., control by carbon tetra- 
chlorid. 164-166,184,189 
Hibiscus, growing, experiments with da- 
light of different lengths.876,879 
Hite, Bertha C., and Harrington, George T.: 
After-Ripening and Germination of Apple 
Seeds. 153-161 
Hoffer, G. N., and Carr, R. H.: Accumulation 
of Aluminum and Iron Compounds in 
Com Plants and Its Probable Relation to 
- Rootrots. 801-824 
Hogs— 
anthelmintics, tests of carbon tetrachlo¬ 
rid... 174-178 
Berkshire, crossing with Duroc-Jersey, in 
heredity studies. 559, 561, 556-574 
breeding experiments for sutdy of heredi¬ 
ty. 557 -s 8 i 
characteristics inherited, size of litter, shape 
of ears, color, etc. 558-581 
color inheritance, studies and conclusions. 562-574 
Duroc-Jersey, crossing with Berkshire in 
heredity studies. 559,561,556-574 
mammary system, heredity variations, 
studies. 577-581 
Page 
Hogs—Continued. 
Tam worth, crossing with wild, in heredity 
studies...... 559,565, 566, 574,581 
wild, crossing with Tam worth and Berk¬ 
shire, in heredity studies. 558,566 
Holbert, James R., Burlison, W. I*. Biggar, 
H. Howard, Koehler, Benjamin, Dungan, 
George H., and Jenkins, Merle T.: Early 
Vigor of Maize Plants and Yield of Grain 
as Influenced by the Com Root, Stalk, and 
Ear Rot Diseases. 583-630 
Holcus halepensis . See Johnson grass. 
Hookworm, control by carbon tetrachlorid, 
notes. 168-187,189 
Horses, anthelmintics, tests of carbon tetra¬ 
chlorid. 178-179 
Hulls, castor beans, use as fertilizer, precau¬ 
tions . 706-707 
Hunter, O. W.— 
Production of a Growth-promoting Sub¬ 
stance by Azotobacter. 825-831 
Stimulating the Growth of Azotobacter by 
Aeration. 665-677 
Hurd, Annie May: Hydrogen-ion Concentra¬ 
tion and Varietal Resistance of Wheat to 
Stem Rust and Other Diseases.373-386 
Husks, com, pentosan content. 658 
Hybrids— 
citrus, dtrangequats and limequats. 229-239 
wheat, segregation and selection for bunt 
resistance.463-472 
Hydrochloric add, effect on wheat at different 
stages of growth. ;. 57-6* 
Hydrogen-Ion, Concentration and Varietal 
Resistance of Wheat to Stem Rust and 
Other Diseases: Annie May Hurd.373-386 
Illinois, wheat rosette outbreak, distribution, 
and investigation. 773-797 
Indiana, wheat rosette outbreak and observa¬ 
tions. 773.775 
India, source of castor bean gray-mold 
disease. 701-702 
Influence of Fertilizers Containing Borax on 
the growth and fruiting of cotton: J. J. Skin¬ 
ner and F. E. Allison...433-444 
Influence of Soil Temperature and Moisture 
on the Devdopment of die Seedling Blight 
of Wheat and Com Caused by Gibberella 
saubinetii: James G. Dickson.837-870 
Influence of Temperature and Evaporation 
upon the Development of Aphis potni De- 
Geer: Frank HDathrop.969-987 
Influence of the Spedfic Gravity of Hens Eggs 
on Fertility, Hatching Power, and Growth 
of Chicks: F. E. Mussehl and D. L. Halbers¬ 
leben. 717-720 
Inheritance in Swine: Edward N. Wentworth 
and Jay h. Sush.557-582 
Inoculation- 
corn and wheat with Gibberella saubinetii . 843-844 
gray mold of castor bean, experiments_702-704 
tobacco, with Bacterium melleum, experi¬ 
ments. 485-486 
Investigations of the Rosette Disease of Wheat 
and its Control: Harold H. McKinney.... 771-800 
Iodin, effect of solution on seeds of Johnson 
grass, Sudan grass, com, and wheat. 212-214 
Ipomoea spp., growing, experiments with day¬ 
light of different lengths. 878-879 
Irish potatoes. See Potatoes. 
Iron and Manganese Content of Certain 
Spedes of Seeds: J. S. McHargue. 395~399 
Iron— 
compounds, accumulation in com plant, 
relation to rootrots.801-824 
plant, occurrence and distribution... 802,805-806 
salts, accumulation in tissues of com plant 
effects.814-818 
solutions, injection into com plants, experi¬ 
ments. 810-813 
Irrigation, summer, of Pima cotton.927-946 
Ivey, J. E., and Kaupp, B. F.: Time Required 
for Food to Pass Through the Intestinal 
Tract of Fowls. 721-725 
Jenkins, Anna E., and Siegler, Eugene A.: 
Sclerotinia carunculoides, the Cause of a 
Serious Disease of the Mulberry (Morus 
alba) . 833-836 
