INDEX OF SUBJECTS, 



965 



Houses — Page. 



disinfection, N.Dak 456 



disinfection witli.formaldeliyde_ 683 



liousewivos, cooperation among 89 



Iluclilebeirios, acidity 110 



Human nutrition, treatise 603 



Humic substances, formation 19 



Humidity, effect on tlie organism TGf) 



Humus — • 



as a source of energy in nitro- 

 gen fixation 51.") 



colloid chemistry of 813 



forest, effect on plant growth 618 



forming substances, role in soil 



absorption 319 



nature of, theories concerning 718 



relation to soil bacteria, Miss__ 721 

 IlliaJopterus — 



arundinis on Rosacea?, Me 848 



pruni, remedies, U.S.D.A 649 



Hybridization and mutation as inde- 

 pendent phenomena 326 



(See also IMant breeding and 

 Animal breeding.) 



Hybrids, graft, rotr-s 726 



Hyduum coraUoidcs, fruiting forms_ 341 

 Hydraulic rams, installation and op- 

 eration 87 



llydrocliloric acid, etiect on sprout- 

 ing of potatoes 829 



Hydrocyanic acid — 



determination 300 



gas as a soil fumigant, Cal 245 



gas, use against household In- 

 sects 846 



Hydrogen ion concentration, treatise- 801 



Hydrogenation of oils, treatise 416 



Hydrometer for latex 48 



Hydrophobia. (See Rabies.) 

 llydroquinone, sterilization of soils 



by 816 



lljdroxyl ions, effect on clay 318 



Ilygii ne — 



bibliogi'aphy 760 



veterinary, treatise 79 



Ifylemyia coarctata, notes 350 



Jlylohius abietis, notes 852 



JJ ymcnochwtc — 



aggJuiinanx, parasitism 640 



ruhifjinosa, studies 845 



Hymenoptera of Georgetown Mu- 

 seum 758 



Uypamblys aJbopictus, life history 352 



j/yperuum perforatum, poisoning of 



horses by 278 



Hypocotyl, studies, N..I 520 



Hypoderma — 



hovis, life history and remedies- 153 



boins, notes, Can 448 



spp., life history 60 



Ifyponomeuta — 



malincUn, biology 554 



spp., notes 751 



Hypoxanthin in hops 502 



Ice — 



and mercury, notes, U.S.D.A 810 



cream, analyses 357 



Ice — Continued. Page. 



cream, analyses, Me 856 



cream, analyses, N.Dak 162 



cream factories, inspection in 



New .Tersoy 254 



cream, investigations. Can 253 



cream, manufacture 253 



cream, marketing 874 



cream, standards 254, 356, 873 



cream, standards, Me 856 



cream, storage 356 



cream, studios 660 



cream, viability of streptococci 



in 174 



exudation from plant stems, U.S. 



D.A 221 



houses, construction, U.S.D.A 591 



infectiousness 253 



storms of New England,U.S.D.A_ 210 

 supplies in railway stations and 



trains ; 456 



use on dairy farms, U.S.D.A 591 



Icerya purchasi. (See Cottony cush- 

 ion-scale.) 



Idaho — 



Station, notes 694, 797 



University, notes 694, 797 



Hex paraguayensis, culture 142 



Illinois — 



Station, notes 94 



T'niversity, notes 94, .395 



Immunity — 



reactions, chemistry of 78, 178 



treatise 578 



Immunization — 



methods for 78 



(See also Anthrax, Tuberculosis, 

 etc.) 



Immunologj', terms used in 475 



Inipatiens sultant, injury and abscis- 

 sion in 627 



Inbreeding — 



formulas for 665 



studies 665 



Incubation experiments, Oreg 868 



Incubators, large, tests, N.J 570 



India rubber. (See Rubber.) 



Indian meal moth — 



notes, Oreg 651 



remedies, Cal 245 



Indiana Station — 



notes 198 



report 693 



Industrial — 



clubs .and contests in Oregon 394 



training in public schools of 



Indiana 595 



Infant foods — 



increasing fat content of 661 



proprietary, composition 660 



proprietary, use , 661 



Infants — 



adaptation of gastric juice to 



diet of 66 



artlQcial feeding and digestive 



disturbances 662 



boiled milk for 857 



