286 



EXPERIMENT STATION RECOED 



Gypsum — Continued, 

 effect on— continued. 



germination of seeds, (29) 328. 



nitrification, (26) 527; (28) 217. 



nitrogen content of soy beans, (28) 721. 



potash solubility, (39) 521. 



protein content of soy beans, (34) 141. 



soil acidity, (37) 23. 



soil microorganisms, (34) 625. 



soil potash, (36) 625. 



soils, (26) 216; (39) 425, 821. 



solubility of phosphates, (28) 818. 



sulfofyiug power of soils, (37) 119. 

 fertilizing value, (26) 725; (27) 321; (28) 137, 

 737; (33) 841; (34) 133, 725; (36) 23, 425; (37) 

 626, 825; (39) 222; (40) 440. 

 for alfalfa, (40) 730. 

 for black alkali soils, (39) 323; (40) 51. 

 industry in 1913, (32) 127. 

 industry in 1916, (39) 120. 

 industry in United States, (34) 221. 

 nitrogen absorption capacity, (28) 325. 

 on alkali soil, (39) 215. 

 production and use in 1913, (33) 26. 

 production and use in United States, (31) 125; 



(36) 124. 

 review of investigations, (27) 128. 

 use against beet rots, (30) 244. 

 use on California soils, (30) 627. 

 use on reclaimed waste land, (28) 736. 

 uses, (32) 127. 

 Gypsy moth, see Gipsy moth. 

 Gyrococcus Oaccidifex — 



n.g. and n.sp., description, (27) 661. 

 notes, (28) 254. 

 Habernaria obtusata, pollination by mosquitoes, 



(30) 658. 

 Habichuela — 



cimarrona, culture, (34) 736. 

 parada, culture, (34) 736. 

 Habrobracon — 

 brevicornis — 



parasitic on bee moth, (26) 657. 



studies, (39) 566. 

 hebetor— 



notes, (27) 564; (29) 658. 



parasitic on fig moth, (26) 248. 

 johannseni, notes, (36) 155, 655. 

 n.sp. on cotton bollworm, (33) 159. 

 n.spp., descriptions, (32) 852. 

 simonovi n.sp., description, (33) 658. 

 Habrocytus— 



fasciatus, notes, (29) 562. 

 medicaginis n.sp., description, (35) 262. 

 medicaginis, studies, (36) 259. 

 North American species, (37) 162. 

 obscuripes, notes, (36) 259. 

 piercei n.sp., description, (26) 362. 

 sp., notes, (26} 151. 

 thyridopterigis, notes, (27) 558. 

 Habrolepoidea depressa n.sp., description, (36) 557. 



Habronema— 



larvae infestation, (40) 586. 



microstoma, notes, (29) 83. 



muscae, life history, (26) 255; (29) 82. 

 Habronemiasis, cutaneous, in horses, (37) 279. 

 Hackberry — 



as a hedge plant, (37) 241. 



insects allecting, (37) 451. 

 Hadena— 



basilinea, notes, (36) 552. 



didyma (oculea), notes, (27) 552. 



fractilinea, notes, (33) 252. 



spp., notes, (27) 659; (39) 765. 



turbulenta, notes, (33) 58. 

 Hadronema, species, (39) 657. 

 Hadronotus javensis n.sp., description, (32) 348. 

 Hadrotettix trifasciatus, remedies, (36) 55. 

 Hadrotrichum— 



piri n.sp., notes, (27) 750. 



populi, notes, (37) 550. 

 Haemaphysalis— 



chordeilis, notes, (33) 35... 



monograph, (35) 263. 



n.spp., descriptions, (27) 361. 



punctata, notes, (28) 82. 



punctata, occurrence in Apenrade, (26) 353. 



silacea n.sp., description, (26) 460. 



spp., notes. (27) 865; (29) 58. 



Haematobia— 



irritans, see Horu fly. 

 sanguisugens, life history, (35) 760. 

 serrata, see Horn fly. 

 naematococcus pluvialis, carotinoid content, (31) 



803. 

 Haematopinus— 



asini, biology and remedies, (38) 184. 

 bituberculatus, relation to surra in carabaos, 



(28) 756. 

 microcephalus n.sp., description, (26) 655. 

 spp. on cattle, (40) 651. 

 suis adventicus n.var., description, (26) 65f 

 suis, studies, (40) 652. 

 Haematopota, parasitic flagellates of, (26) 84. 

 Ilaematosiphon inodora, notes, (29) 454. 

 Haemithacea erythrostoma, parasitic on grapevine 



sphinx, (26) 250. 

 Haemogamasus — 



oudemansi n.sp., description, (32) 353. 

 sanguineus n.sp., description, (34) 66. 

 Haemogregarina spp., notes, (26) 883. 

 Haemonehus contortus— J 



anatomy and life history, (35) 678. 

 in Guam, (35) 878. 

 in Philippines, (37) 277. 

 life history, (29) 476. 



notes, (27) 182; (28) 481; (37) 779; (40) 88. 

 Haemoproteus — 



columbae, sporogony, (34) 855. 

 columbae, transmission, (35) 678. 

 danilewski, notes, (26) 883. 

 Ilaemosporidia, classification, (39) 163. 

 Haemostrongylus vasorum, notes, (.30) 279. 

 Haemotrichomonas n.g. and n.spp., notes, (38) 784. 

 nail- 

 as affected by forests, (29) 842. 

 effect on trees, (37) 250. 

 formation, theories, (34) 208. 

 in Kansas, (38) 209. 

 Maryland, (34) 413. 

 Paris region, (36) 208, 719. 

 the Tropics, (27) 617. 

 United States, (37) 512. 

 injury to cereals, (33) 127. 

 injury to cultivated plants, (35) 734, 

 insurance, (40) 894. 

 insurance- 



in Alberta, (39) 496. 

 Denmark, (27) 794. 

 England and Wales, (29) 189. 

 France, (20) 388; (29) 790. 

 New England, (36) 192. 

 North Dakota, (37) 594. 

 various countries, (36) 593. 

 report on, (26) 515. 

 statistics, (40) 894. 

 protection, (27) 15; (31) 22. 

 proteoti on — 



electric niagaras for, (30) 511; (34) 208. 

 electrical devices for, (31) 416. 

 experiments, (40) 118. 

 in France, (30) 713. 

 squall in Baltimore, (37) 807. 

 theories, (37) 512. 

 wounds on fruits, notes, (28) 826. 

 wounds on woody plants, studies, (29) 131. 

 Hailstones, unusual formation, (27) 617; (38) 210. 

 Hailstorm — 



at Ballinger, Texas, (37) 513. 

 in Kansas, (27) 616. 

 of August 8, 1917, (38) 811. 

 on James Island, S. C, (29) 721. 

 remarkable, in region of Provins, (40) 512. 

 Hailstorms— 



and hail prevention in France, (35) 318. 

 in Belgium, (30) 17. 

 prevention, (27) 719. 

 Hair — 



and hair colors, notes, (27) 369. 



and hair pigments, physiological character, 



(32) 361. 

 and wool, disinfection, (40) 783. 

 availability of nitrogen in, (38) 423. 

 dog's, hydrolysis of (26) 22. _ 

 tankage, availability of nitrogen m, (26) 523, 725. 

 waste, analyses, (28) 523. 

 waste, fertilizing value, (33) 125. 



