958 



EXPERIMENT STATION RECORD. 



[Vol. 43 



Grass — Continued. 



seed testing, method, 44. 

 seed.s, infestation of skin of sheep by, 

 184. 

 Grasses — 



as forage crops in Denmark. 177. 



as paper-making material, 317. 



culture, Idaho, 738. 



culture experiments, 824. 



culture on peat soil, 23. 



effect on fruit trees, 29, 237. 



fall seeding. Wash., 738. 



for lawns in South China, 441. 



Linnsean genera of, 729. 



meadow, on swamp lands, Oreg., 21. 



North American, revision, 522. 



root development as afEected by water 



level, 623. 

 variety tests. Can., 735. 

 wild, role in stem rust epidemics, Iowa, 



654. 

 (See also Meadows, Pastures, and spe- 

 cific grasses. ) 

 Grasshopper catching machine, design, 53. 

 Grasshoppers — 

 control, 53. 



control, organization for, 354. 

 differential, poison baits for, Ariz., 757. 

 notes, Mont., 758. 

 on cotton, U.S.D.A., 352. 

 on wheat, Ind., 352. 

 poison baits for, 353. 

 {See also I^ocusts.) 

 Grassland. (See Grass, Meadows, and Pas- 

 tures.) 

 Grasslands, effect of spring and fall grazing, 



824. 

 Gravel for roads. {See Road materials.) 

 Grazing — 



as affected by rainfall, U.S.D.A., 717. 

 in National forests, management, 148. 

 (See also Ranges.) 

 Green — 



manures — 



effect on nitrate production. 111., 



214. 

 effect on soil acidity, 212. 

 for paddy soils, 423. 

 relation to wheat take-all, 153. 

 manuring experiments, Md., 122, 133. 

 Greenhouse thrips on avocado, 851. 

 Greenhouse thrips on avocado, . control, 



255. 

 Greenhouses — 



chrysanthemum midge in, U.S.D.A., 



360. 

 concrete, construction, 90. 

 monthly working calendar for, 236. 

 Greensand — 



and sulphur, effects on soil potash, 



Md., 121. 

 effect of sulfofication, 517. 

 New Jersey, potash exploration in, 

 817. 

 Grocery stores in Fargo, economic study, 



N.Dak., 368. 

 Ground squirrels. (See Squirrels, ground.) 



Growth — 



and hydration, studies, 428. 



rings, daily, in cell wall of cotton 

 hairs, 633. 

 Growth-promoting accessory. {See Vita- 

 min.) 

 Guano — 



bat, fertilizing value. Mo., 721. 



of Sardinia, analyses, 24. 



whale, fertilizing value, Can., 727. 

 Guanol fertilizer, decomposition of betain 



in, 27. 

 Guavas, culture experiments, 40. 

 Guinea pigs, exhibition standards, 575. 

 Gum — 



acacia, effect on circulation, 79. 



arable, gold number determination, 12. 



resins, iron content, 202. 

 Gummosis in garden plants, 346. 

 Gums — 



iron content, 202. 



substitutes in Germany, 204. 

 Gum-tree ashes, fertilizing value, 324. 

 Gutta percha substitutes in Germany, 204. 

 Gutters, concrete, construction, 90. 

 Oirmno sporangium clavipes, temperature of 



spore germination, N.H., 842. 

 Gymnosporangium, Russian species, 731. 

 Gypsum — 



analyses, Oreg., 129. 



effect on alkali soils, Ariz., 724. 



effect on composition of soil extracts, 

 Mich., 124. 



effect on solubility of soils, 510. 

 Jlahrocytus mediscaginls, notes, U.S.D.A., 



365. 

 Haironema spp., lifo history, 585, 883. 

 Habronemiasis, studies, 585. 

 Hadeiia — 



oleracea, control, 454. 



ttemicana, notes. Conn. State, 251. 

 Ha/maphysalis leachi, notes, 84. 

 Haematopinus suis, notes, U.S.D.A., 688. 

 Hail— 



as affected by airplanes, 618. 



frequency and distribution, U.S.D.A., 

 119. 



frequency in Sweden, 621. 

 Hailstorms, papers on, U.S.D.A.. 511. 

 Hairlessness, prevention. Wash., 384, 784. 

 Halcrpcfttis cymhalaria. poisonous to live 



stock, Nev., 273. 

 Halos, papers on, U.S.D.A., 718. 

 Ilalticini of College Park, list, Md., 158. 

 Haplogonatopus orientaUs n. sp., descrip- 

 tion, 857. 

 Hardwood distillation plants, tar-still in, 



T17. 

 Hardwoods of Australia, uses, 149. 

 Harvesting machinery, notes, 892, 

 Hawaii Federal Station, notes. 398. 

 Hay- 

 chopped, digestion coefficients, 266. 



crops, culture experiments, Mont., 332, 



crops, notes, 527. 



crops, short season, Mich., 333. 



market, shrinkage, U.S.D.A., 825. 



