306 



EXPERIMENT STATION RECORD 



Hydrogen-Ions, effect on— 



bakinp quality of flour, (27) 166. 



metabolism of Aspergillus niger, (30) 630. 

 Hydroly.-'is, effect on nitrogen distribution in fibrin, 



(38) 310. 

 Hydrolyzing agents, effect on starch, (26) 107. 

 Dydrometcors, classification, (36) 19; (37) 115. 

 Hydrometer for latex, (31) 444; (.32) 48. 

 Hydrophilus piceus, digestive ferments of, (26) 657. 

 Hydrophobia, see Rabies. 

 Hydroquinone— 



effect on soil microorganisms, (31) 27. 



sterilization of soils by, (32) 816. 



utilization by plants. (36) 329. 

 Hydroscaphidae, catalogue, (26) 560. 



Hydrotaea — 



dentipes, studies, (30) 457, 552. 



meteorica in North America, (35) 759. 



spp., studies, (37) 764. 

 Hydrotacas, new, (40) 263. 

 Hydrotropism in lupine roots, (34) 223. 

 a-hydroxybphenic acid, notes, (31) 312. 

 (J-Hydroxyglutamic acid, structure, (40) 611. 

 Hydroxylamin— 



assimilation by plants, (26) 32. 



hydrochlorid, assimilation by plants, (26) 32. 

 Hydroxyl-ion concentration, effect on growth of 



barley seedlings, (38) 736. 

 Hydroxyl-ions, effect on clay, (31) 216; (32) 318. 

 ^-Hydroxy methyl furfuraldehyde, production from 



carbohydrates, (34) 11. 

 Hydroxvpyridins— 



antineuritie properties, (35) 711; (40) 271. 



curative forms, (37) 411. 

 Hydrozetes, revision, (38) 460. 



Hygiene— 



and diet in schools, treatise, (29) 363. 



and preventive medicine, treatise, (38) 882. 



and sanitation, military, textbook, (34) 369. 



bibliography, (32) 760. 



domestic, papers on, (30) 763. 



handbook. (28) 461; (30) 63, 763. 



in rural, suburban, and summer homes, (31) 387. 



in schools, report on, (31) 261. 



instruction in Germany, (26) 794. 



public, legislation concerning, (26) 359. 



race, notes, (27) 70. 



treatise, (26) 65, 386; (40) 694, 866, 899. 



tropical, treatise, (28) 78. 



veterinary, treatise, (32) 79. 

 Hygrometer — 



chemical, description, (34) 208. 



kite, improved, (37) 513. 

 Hygrometry, improved methods, (37) 16; (38) 210. 

 Hylastes ruber n. sp., description, (35) 856. 

 Hylastes trifolii, notes, (31) 848. 

 Hylastinus obscurus, sec Clover root-borer. 

 Hylecoetus— 



dermestoides, structure and biology, (28) 858. 



sp., notes, (27) 458. 

 Hylemyia — 



antiqua, see Onion maggot. 



coarctata, biology, (35) 460. 



coarctata, notes, (27) 453, 552, 560; (31) 57; (32) 

 350; (40) 547. 

 Hyles (Deilephila) euphorblae, notes, (26) 656. 

 Hylesinus— 



n. spp., descriptions, (30) 757. 



oleiperda, notes, (30) 455. 



opaculus, notes, (27) 658. 



spp., notes, (27) 59. 

 Hylobius— 



abietis, bionomics, (26) 861. 



abietis, notes, (32) 852. 



abietis, studies, (30) 856. 



pales affecting conifers in New England, (35) 

 747. 

 Hylotrupes juniperl n.sp., description, (34) 254. 

 Hsrmenia— 



fascialis, notes. (26) 250; (28) 158; (29) 456. 



fascialis, studies. (26) 249. 

 perspectalis, notes, (28) 854. 



perspectalis, studies, (29) 455. 

 Hymenobosmina verimacuiata n.sp., description, 

 (28) 162. 



Hymenochaete — 



agglutinans, parasitism. (32) 640. 



noxia. notes. (26) 851; (27) 451; (28) 241; (29) 

 547, 749; (31) 55; (33) 449. 741; (34) 442, 540, 

 744, 849; (35) 45, 251, 551; (36) 347, 746, 846, 

 851, 852; (38) 52, 53, 354; (39) 153, 849; (40) 

 53, 249, 349. 



noxia on cacao roots. (37) 349. 



noxia, on tea roots, (37) 52. 



noxia, treatment. (29) 552. 



rubiginosa, studies, (32) 845. 



Hymenolepis — 



diminuta and H. nana siebold. life history, (37) 



163. 

 n.spp., descriptions, (26) 561. 

 spp., dissemination by flies. (30) 659. 



Hymenomycetes — 



association with woody forest plants, (37) 727. 



fruiting bodies, vitality, (30) 350. 



on fruit trees, (37) 47. 



relation to Uredinales, (28) 244. 



Hymenoptera — 



American, notes, (36) 261. 



chaloidoid, notes, (36) 60. 



chalcidoidea, Australian, (39) 154. 



described by Abb6 Provancher, lectotypes of, 



(39) 663. 

 description, (36) 759. 

 leaf oviposition, (37) 162. 

 microsporidiosis in, (27) 459. 

 new, (26) 63; (30) 59. 661, 7.58; (31) 355; (36) 260. 

 new pteromalid chalcidoid genus from North 



America. (35) 857. 

 nidification, biology, and parasites, (27) 656. 

 of Australia, (28) .563. 

 British India. (37) 765. 

 Connecticut. (37) 765. 

 Georgetown Museum, British Guiana, (26) 



63, 353; (32) 758. 

 Guam. (31) 62. 

 India. (31) 159. 

 parasitic — 



habits, (34) 363. 

 immigrant in Hawaii, (40) 265. 

 new. (39) 566, 662, 663; (40) 61, 458, 761. 

 of Guiana. (39) 869. 

 on lac and sal insects. (31) 62. 

 polyembryony. (40) 265. 

 predacious and parasitic, notes. (36) 456, 461. 

 treatise, (26) 352. 



vespoid and sphecoid, in Guatemala, (34) 857. 

 W. M. GiSard collection, (37) 855. 

 Hymenopterous— 



egg parasites, adult habits, (40) 459. 

 parasites, minute, handling, (29) 658. 

 parasites, relation of food to reproduction and 



longevity in, (26) 4.57. 

 wing, horismology. (35) 262. 

 Hymenoxys floribunda. description, (39) 386. 

 Hyoscyamus niger— 



breeding experiments, (30) 631. 

 oil, analyses, (36) 803. 

 Hypamblys albopictus, life history, (32) 352. 

 Hypera punctata, see Clover leaf weevil. 

 Hyperablys albopictus, notes, (30) 362. 

 Hyperallus caliroae, notes, (26) 153. 

 Hyperaspis— 



binotata larva, description, (36) 658. 

 binotata, studies, (35) 261. 

 lateralis, notes, (26) 149. 

 Hyperdiplosis producta n.sp., description, (27) 57. 

 Hypericum perforatum — 



chemistry and anatomy of. (34) 522. 

 poisoning of horses by. (32) 278. 

 Hypermallus rusticus, notes. (28) 356. 

 Hyperoides fragariae n.g. and n.sp., description, 



(33) 159. 

 Hyperplasia, production in plants, (31) 326. 

 Hyphantria cunea, see Webworm, fall. 

 Hypholoma fasciculare, composition, (26) 750. 

 Hyphomycetes — 



enzyms in. (30) 241, 805. 

 iron-storing, studies, (27) 527. 

 Hypoaspis armatus n.sp., description, (38) 63. 

 Hypochaeris radicata, geographical distribution, 

 (26) 335. 



