About the Book
This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1920. Excerpt: ... House fly--Continued. relation to hog cholera, 578. remedies, 662. Household--budget and accounts, teaching, 494. devices, recipes, etc., 699. labor-saving appliances, treatise, 692. thrift, lessons, 66. (See also Home economics.) Huanacu, domestication in Peru, 869. Hufenandia n.spp., descriptions, 740, 741. Hummingbirds, keeping in captivity, 56. Humus--determination, 803. effect on chemical reactions In soil, 720. fertilizers, studies, 722. nitrate formation in, 125. soils of Sweden, classification, 511. Humus-forming plants, H-lon concentra-tion, 19. Humus-poor soils of Sweden, classification, 510. Hunting, notes, 743. Hyacinth bean, specific names, 523. Hyalopepltis amaragdinua n.sp., description, 847. Hyalopterus arundini---in South Dakota, 59. studies, U.S.D.A., 163. Hybridization--asexual, through grafting, 522. evolution by, 223. increased development from, hypothe-sis, 747. of pheasants and Golden Camplnes, 472. (See also Breeding.) Hybrids, twin and constant, in Drosophlla, 867. Hydraulic fills, determining pressures, 582. Hydrocyanic acid--in Burma beans, 633. in Cystopteris alpitia, 633. liquid, for fumigation, 164, 551, 754, 757; Cal., 550. liquid, properties, Cal., 502. Hydrogen-- carbon monoxld determination in, 312. peroxid, catalytic decomposition, 409. reaction with carbon dioxid in soils, 720. Hydrogenation, catalytic, treatise, 310. Hydrogen-ion concentration--determination, 11, 503. voltage conversion tables and bibliog-raphy, 204. Hydrophobia. (See Rabies.) Hygrometrical tables, 808. Hylemyia---cerealis, notes, Mont., 57. coaretata, notes, 847. Bylurgops pMfex, notes, 758. Hymenolepis carioca, life history, 881. Hymenoptera--of Minnesota, 57. parasitic, new, 63, 463. Hypena humuli, studies, N.Y.Cornell, 161. Hyperglycemia, obse...
