44 BUL. 1199 (SUP. 2), U. S. DEPARTMENT OF AGRICULTURE 
Grasshoppers — 
baits, Colo. Bui. 280; Nebr. Bui. 183.' 
clear-winged, Minn. Bui. 214. 
control, Colo. Bui. 287. 
in Utah, Utah Bui. 191. 
Green manure, sweet clover, Md. Bui. 253. 
Green manure for soil improvement, Md. 
Bui. 268. 
Greenhouse — 
insects, Mich. Spec. Bui. 134. 
temperature and moisture, control 
equipment, Nebr. Res. Bui. 28. 
Grit, amount in gizzards, N. C. Tech. Bui. 
22. 
Guernsey cattle, milk and butter-fat pro- 
duction, Me. Bui. 311. 
Gummosis of citrus, Calif. Bui. 360. 
Gypsum — 
for alkali soils, Calif. Tech. Paper 9. 
for legumes, Wash. Pop. Bui. 128. 
Haploa reversa, Ark. Bui. 183. 
Hay- 
emergency crops, Wis. Bui. 359. 
methods of handling, Colo. Bui. 281. 
summer annuals, Conn. Storrs Bui. 
120. 
Hedges for Florida, Fla. Bui. 172. 
Heifers — 
development, effect of calving and feed- 
ing, Kans. Bui. 233. 
growth studies, Nebr. Bui. 184. 
protein requirements, Mo. Res. Bui. 66 ; 
Nebr. Bui. 184. 
Helminthosporium sativum — 
pathogenicity, Minn. Tech. Bui. 17. 
reaction of barley varieties. Minn. 
Tech. Bui. 21. 
Hemerophila pariana, Conn. State Bui. 246. 
Hens, immunized, bacterial content of eggs, 
R. I. Bui. 197. 
Hens, laying — 
calcium metabolism, Ky. Bui. 250, 252. 
protein feeds, Mont. Bui. 161 ; Tex. 
Bui. 317. 
(See also Egg production.) 
Hens. (See also Chickens.) 
Hessian fly in Kansas, Kans. Tech. Bui. 11. 
Hogging down crops, La. Bui. 187 ; Mo. Bui. 
224. 
Hogs. (See Pigs.) 
Holly Springs branch station, Mississippi, 
report 1923, 1924, Miss. Bui. 220, 223. 
Holstein-Friesian sires, Mo. Bui. 217. 
Home grounds, beautifying, Colo. Bui. 290. 
Homes, farm. (See Farm homes.) 
Hopperburn, potato, control, Ohio Bui. 368. 
Horses — 
infectious anemia, Wyo. Bui. 138. 
(See also Colts.) 
Hybridization — 
corn, effect on yield, N. Dak. Bui. 177 ; 
Va. Tech. Bui. 27. 
grapes, N. C. Tech. Bui. 23. 
strawberries, Nebr. Bui. 189. 
Hydathodes, nature and reaction of water, 
N. Y. Cornell Mem. 65. 
Hydrocarbon in corn pollen, N. Y. State 
Tech. Bui. 92. 
Hydrogen cyanide, for pear psylla, N. Y. 
State Bui. 523. 
Hydrogen-ion — 
concentration, determination, N. Y. 
Cornell Mem. 66. 
concentration, influence on tomato 
wilt, Mo. Res. Bui. 64. 
concentration, relation to soil molds, 
Iowa Res. Bui. 76. 
test in city milk, Mich. Spec. Bui. 124. 
Hydroxyl-ion concentrates, relation to soil 
molds, Iowa Res. BuL 76. 
Hylemyia orassicae. (See Phorbia brassl- 
cae.) 
Ice cream — 
bacterial content, Mieh. Tech. Bui. 60. 
effect of proportions of ingredients, Mo. 
Res. Bui. 69, 70, 71. 
formulas and standardization, Nebr. 
Bui. 203. 
sandiness. Ind. Bui. 286. 
yield, factors affecting, Ind. Bui. 287. 
Idaho agricultural experiment station, re- 
port 1922, 1923, Idaho Bui. 131, 133. 
Imhoff tanks, biological studies, N. J. Bui. 
390, 403. 
Immunization of hens, effect on bacteria hi 
eggs, R. I. Bui. 197. 
Inbreeding in poultry, Conn. Storrs. Bui. 
111. 
Incubation of eggs. (See Eggs, incuba- 
tion.) 
Inoculation of legumes. (See Legumes, in- 
oculation.) 
Insecticide dusts, volatility of nicotine, N_ 
Y. State Bui. 501. 
Insecticide law of Connecticut, Conn. State- 
Bui. 258. 
Insecticides — 
analyses, N. J. Bui. 392, 407. 
and fungicides, inspection, Conn. State- 
Bul. 258. 
for Mexican bean beetle, Tenn. BuL. 
131. 
(See also Sprays and specific forms.)- 
Insects — 
cotton, Virgin Islands Bui. 3. 
greenhouse, Mich. Spec. Bui. 134. 
injurious, Mich. Spec. Bui. 132. 
potato. Fla. Bui. 169. 
scale, Mo. Res. Bui. 58. 
soybean, Ohio Bui. 366. 
strawberry, Mo. Bui. 215. 
truck crop, Md. Bui. 261 ; Virgin Is- 
lands Bui. 4. 
(See also under orders, etc., and spe- 
cific insects.) 
Insurance, fire, cooperative, -N. Y. Cornells 
Bui. 435. 
Internal breakdown in apples, Iowa Bui. . 
222. 
Irrigation — 
canals, concrete-lined, Ariz. Bui. 97. 
effect on alkali soils. N. Mex. Bui. 136, . 
