958 



EXPERIMEKT STATION EECOK0. 



Hydrocyanic acid- 

 determination in plants "09 



formation from proteins 802 



gas, effect on cucuml ers, Mass 142 



gas, use against mill insects, Kans 155 



in flax, N.Dak 380 



in grains in hot regions 30 



in Kafir corn and sorghum, Okla 584 



in white clover 36 



production by bacteria 802 



Hydrogen- 

 ions effect on metabolism of Aspergillus 



mger. 



630 



peroxid as a food preservative 364 



peroxid, effect on amylase of woman's 



milk 311 



peroxid, effect on milk tests for formal- 

 dehyde 414 



Hydrophobia. {See Rabies.) 



Hydrotxa dentipes, studies 457, 552 



Hygiene- 

 domestic, papers on 763 



handbook 63, 763 



Hylesinus— 



n.spp., descriptions "57 



oleiperda, notes 455 



Hylobius abietis, studies 856 



Hymenolepis spp., dissemination by flies 659 



Hymenomycete fruiting bodies, vitality 350 



Hymenoptera, new, descriptions 59, 661, 758 



Eyoscyamus niger, breeding experiments 631 



Hyperablys albopictus ( = Mesoleius transfuga), 



notes 362 



Hyphomycetes, enzyms in 241, 805 



Hypochnus solani, notes 47 



Hypocotyl, studies, N.J 331 



Hypodcrma bovis — 



larval stages 254 



occurrence in Canada 552 



HypoTwmeuta malinellus, bionomics and rem- 

 edies 755 



Hypophysin, notes 578 



Hypophysis extract, effect on milk secretion. . 375 



Hypoptcromalus viridescens, notes 59 



Hypothereutcs nigrolineatus n.sp. , description . 60 

 Eypsopygia costalis. {See Clover-hay worm.) 

 Ice- 

 cream, analyses 178, 678 



cream, function of colloids in 476 



cream powders, examination, Conn.State. 664 



cream, sampling for Babcock test 274 



effect on stream flow 318 



harvesting by electricity 892 



use in preserving foods in homes 165 



Iceberg debris, nitrifying organisms in 818 



Icehouses, construction 487, 489 



Icerya purchasi. {See Cottony cushion-scale. ) 



Ichneumon flies, new, descriptions 59 



Ichneumonidse, revision 59 



Ichneumons, type species of 661 



Idaho University, notes 497, 698 



Illinois University, notes 497 



Immigration in United States 591 



Immune bodies, leucocyte-dissolving, notes . . 477 

 Immunity— 



and infection, treatise 878 



relation to protein split products 379 



Page. 



Immunization. {See Anthrax, Tuberculosis, 

 etc.) 



Imperata exaltata, notes 229 



Imperial Royal High School of Agriculture of 



Vienna 194 



Inbreeding — 



effect on cattle 869 



effect on fecundity and vigor 267 



effect on poultry 71 



measurement of intensity, Me 66,564 



India rubber. (See Rubber.) 

 Indiana — 



Corn Growers' Association, report 37 



Station, notes 698 



Station, report 598 



Indican excretion as affected b y diet 65 



Indigo, culture 335, 632 



Indigofera— ' 



arrecta, culture experiments 632 



galegoides, culture 335 



Indol— 



excretion as affected by diet 65 



from artiflcial digestion and decay of pro- 

 teins 65 



Industrial- 

 education hi Columbus, Georgia 298 



schools in Korea 794 



training in colored schools of Kentucky. . 298 

 Infants- 

 boiled milk for 760 



care and feeding 763 



determination of surface area 669 



fasting, metabolism of 562 



importance of breast milk for 861 



respiration experiments 369 



Infection— 



and immimity, treatise 878 



hereditary in cattle ticks 460 



Influenza, equine- 

 investigations 186 



pectoral form, treatment 285, 385 



virus carriers of 185 



Inheritance. (See Heredity.) 

 Insect- 

 activity, relation to temperature and 



moisture, S.C 545 



galls in Eiuope 852 



parasites, notes 454, 455, 753 



parasitism, studies 59 



Insecticides- 

 effect on germination of wheat 837 



preparation and use 442, 534, 642 



tests. Mass 156 



{See also specific forras.) 

 Insects— 



as carriers of bacterial infections 153 



beneficial. Importation into California — 753 



carnivorous, in region of Paris 853 



coccobacUli infections of 54,551 



destruction b y vegetable parasites 155 



distribution in climatic zones 852 



household, notes 462 



hygrophily and phototropism in 752 



injurious— 



in Algeria and Tunis 154 



in Barbados 752 



in Brazil 454,657 



