INDEX OF SUBJECTS. 



965 



Humus — I'age. 



acids, effect on soil bacteria 521 



determination in heavy clay soils 110 



determination in soUs, Term Ill 



effect on nitrogen assimilation 120 



effect on sandy soils 732 



formation and decomposition 120 



importance 215 



Hyacinths- 

 bulbs, nematodes affecting 450 



pollen, parasite of 641 



Hybrid, graft, in apples 140 



Hybridization, spontaneous, in plants 823 



Hydraulic ram, notes 291 



Hydraulics, treatise 383,587 



Hydrocyanic acid — 



formation in plants 826 



fumigation of plants with 57 



gas, effect on tobacco 747 



in plants 520 



utilization by plants 730 



Hydrogen chlorid gas, effect on diastase and 



invertase 806 



Hydrometer for latex, description 444 



Hydrophobia. (.See Rabies.) 



Hydroquinone, effect on soil micro-organisms 27 



Hydroxy 1 ions, effect on clay 216 



Hygiene — 



in rural, suburban, and summer homes. . 387 



in schools, report on 261 



Ilylastes trifolii, notes 848 



Uylcmyia coarclata, notes 57 



Hymenochsfte noiia, notes 55 



Hymenoptera— 



new, notes 355 



of Guam 62 



of India 159 



parasitic on lac and sal insects 62 



Hypera punctata, notes 457 



HjT)erplasia, production in plants 326 



Hypomyces — 



ipomax on sweet potatoes, U.S.D.A 544 



pcrniciosuf, notes 843 



Ice— 



and salt, lowest temperature with, 



U.S.D.A 615 



cream, determination of overrun. Wis. . . 875 



cream, examination 656 



cream, examination. Me 556 



cream factories, computer for 276 



cream, investigations. Wis 874 



cream plants, inspection, Ky 359 



cream, sampling 210 



effect on atmospheric temperature 511 



harvesting 92 



house, description 93 



patrol over north Atlantic Ocean, 



U.S.D.A 615 



sawing by electricity 291 



Icerya — 



puTchasi. (See Cottony cushion-scale.) 



zetekin. sp., description 251 



Ichneumon extrematatis, notes, Mass 752 



Ichneumonidaj in British Musemn, revision. 656 



Idaho University and Station, notes 795, 900 



Idrissp., notes, N.Y.State 650 



80404°— 15 6 



lUinois— Page. 



Station, notes 300, 795 



Station, report 396 



University, notes 197, 300, 795. 900 



Immigrants— 



as farmers 294 



Slavic and Jewish, on Connecticut farms. 93 



Immigration in different countries 490 



Immunization. (See Anthrax, Tuberculosis, 

 etc.) 



Impaliens sultani, axial abscission in 129 



Inbreeding- 



in animals, effects 564 



in Germany 70 



Incubation — 



carbon dioxid in, Conn. Storrs 172 



natural and artificial, U.S.D.A 173 



Incubators, management, Mont 670 



India rubber. (See Rubber.) 



Indigo- 

 culture experiments 733 



diseases, notes 145, 641 



"psylla " disease, studies 755 



Industrial- 

 club work in rural schools 297 



clubs and contests in Oregon 393 



education in Oregon 97 



training in Canada 596 



Infant — 



feeding, charts for 557 



foods, determination of fitness 413 



foods, proprietary, nutritive value 461 



Infants- 

 feeding and care 360, 557, 660 



nursing, as affected by change of diet 662 



pasteurized milk for 460 



prenatal care 463 



value of various sugars for 762 



Infections — 



acute , in laboratory animals 479 



relation to diet 464 



specific therapy of 479 



Influenza — 



equine, etiology 87 



equine, investigations 382 



equine, jjcctoral form, immunization 184 



treatment 378 



Inheritance. (See Heredity.) 



Ino ampelophaga, notes 548 



Insect- 

 galls, notes 155 



larvse, arrest of growth 751 



records, methods of taking 848 



Insecticide law in Ohio 740 



Insecticides — 



analyses 740 



analyses. Me 49 



analyses, N.J 142 



analyses, N.Y.State 340 



classification and compatability 751 



inspection in Ohio 740 



notes 248 



preparation and use 58, 153 



preparation and use, Mont 635 



preparation and use, S.C 141 



preparation and use. Term 635 



