1917] 



INDEX OF SUBJECTS. 



953 



Hog cholera — Continued. Page. 



controlin Oregon 374 



control in Pennsylvania 577 



etiology 3?2,782 



immunity of suckling pigs to 881 



immunization, Mo "79 



in Hawaii 374 



in United States... 274 



notes 477,784 



prevention. 111 882 



relation to spirochetes o^ digestive tract. . 279 



serum, filtration 881 



senim, separation of active principle, Nev 78 



transmission through infected pork 691 



virulence of blood in 784 



Home- 

 demonstration woT'k, effect of, U.S.D.A.. 598 



grounds, pl annin g and planting 44,346 



making schools in New York 394 



Home economics- 

 association in Alabama 895 



course for southern schools, U.S.D.A 894 



instruction in California 394 



instruction in Canada 699 



instruction in German Svritzerland 793 



instruction in New Hampshire 699 



instruction in North Dakota 193 



instmction in public schools 93, 494 



instruction in United States 393 



instruction in Utah 198 



instruction, papers on 192, 596 



textbook 396,894 



Hominy feed — 



analyses, Conn. State 268 



analyses, R.I 767 



analyses. Wis 471 



Homoptera of British India 64 



Honey — 



analyses and food value 570 



eater, new, from Marianne Islands 758 



production, relation to weather, Iowa 854 



Honeybees. (See Bees.) 



Hookworm, remedies 678 



Horizonetta, new genus, erection 758 



Horn- 

 fly, parasitesof 847 



ground, fertilizing value 321 



Horse- 

 chestnut leaf cast, notes 658 



diseases, handbook 778,784 



labor, cost, U.S.D.A 867 



manure, storage experiments, Me 628 



racing, plea for 771 



radish flea-beetle, studies, U.S.D.A 666 



saliva, diastatic action 771 



Horseflies— 



egg-laying habits and early stages 853 



in southern Florida 565 



Horses- 

 breeding, U.S.D.A 368,572 



cost of keeping, U.S.D.A 867 



diseases of reproductive organs, Okla 473 



feeding experiments, Guam 768 



feeding experiments, Minn 269 



feeding experiments, N.C 681 



improvement, Guam 768 



improvement, value of good sires 866 



Horses— Continued. Page. 



judging 94 



raising, Kans 368, 868 



Percheron, history 771 



salivary digestion studies 681,771 



shipping fever of 182 



Thoroughbred, breeding and racing 771 



treatise 770 



Horticultural- 

 education in Netherlands 193 



laws of Washington 342 



societies in Pennsylvania 888 



Hotbeds, construction and management, 



Colo 41 



Hothouse milliped, studies, Md 667 



House fly — 



life history and remedies 560,853 



response to foods and their fermentation 



products ] 59 



seasonal abundance in Montana 764 



studies, N.J 665 



transmission of typhoid fever by 854 



Hou."5ehold insects, notes 459 



Housekeeping schools in Norway 294 



Huckleberries- 



acid content 715 



drying 509 



Humidity— 



and vapor pressure over United States, 



U.S.D.A 314 



effect on insects 254 



Humogen. (See Peat, bacterized.) 



Humus— 



as a guide to soU fertility 718 



fertihzing value, judging 210 



formtug materials, effect on soil bacteria, 



Iowa 120 



notes 629 



phosphoric acid of soils 121 



production from manures 20 



soluble, effect on soU bacteria 517 



Hunger, studies 166 



HunlereUus hookeri, notes 360 



Hyalopterus arundinis, cat-tail as a summer 



host 461 



Hybridization, role in evolution 432 



(See also Plant breeding.) 



Hydraulic development and equipment, 



treatise 287 



Hydraulics, textbook 584 



Hydrocampa (Nijmpliula) nymphxta, notes.. 847 



Hydrochloric acid — 



effect on plants 224 



effect on rotatory power of sucrose and 



invert sugar 802 



Hydrochloroplatinic acid, preparation 409 



Hydrocyanic acid — 



determination in sorghum 113 



gas, effect on insects and plants, Md 660 



in cassava, Hawaii 168 



in leguminous plants 28 



Hydrogen — 



determination 803 



ion concentration, determination 506 



peroxid as an oxidizer 409 



sulphid, precipitation under pressure 712 



Hydrometcors, classification, U.S.D .A 115 



