SUBJECT INDEX 



207 



Drainage — Continued, 

 of golf greens, (31) 889. 



gumbo, hardpan, and seepy land, (26) 892. 



Haarlem Lake, Holland, (29) 182. 



hill soils, (36) 723. 



irrigated land, (27) 686; (31) 684, 783, 889; 

 (33) 88, G83; (34) 86. 483; (36) 399; (37) 

 86, 186, 281, 587, 883; (38) 388. 



irrigated land in Egypt, (29) 684, 816. 



Java tea soils, (36) 320. 



lowlands, scoop wheel in, (27) 687. 



marshlands, (40) 587. 



orchard lands, (36) 888. 



overflowed lands, (32) 883. 



peat lands, (38) 591, 690. 



roadbeds, (40) 291. 



Silver Lake and Paulina Marsh, (36) 285. 



swamp lands, (30) 588; (31) 783. 

 on the farm, (28) 786. 

 open ditch method, (30) 289. 

 papers on, (33) 392; (36) 186. 

 plans, notes, (28) 289. 

 problems, notes, (27) 789. 



project — 



along Big Black River, Mississippi, (32) 



883 

 in Arkansas, (32) 588; (33) 288. 

 Florida, (27) 189. 



Hampton and Jaspar counties, (31) 684. 

 Louisiana, (27) 189. 

 Mississippi, (26) 590. 

 Missouri, (27) 687. 

 North Carolina, (26) 590; (27) 789. 

 projects, organization and financing, (36) 187. 



pumping — 



cost of, (34) 585. 



electricity v. steam in, (31) 890; (32) 588. 

 in relation to rainfall, (38) 387. 

 machinery for, (31) 784. 

 plant for, (29) 785. 

 reclamation of alkali soils by, (26) 590. 

 relation to precipitation and evaporation, (40) 



810. 

 studies, (31) 783. 



subsoil, for preventing malaria, (30) 486. 

 textbook, (35) 788. 



tile— , , 



bulkheads, plans and specifications, (28) 



289. 

 clogging by roots, (26) 37. 

 cost, (35) 491. 

 in Illinois, (27) 484. 

 manufacture and use, (28) 890. 

 methods of testing, (27) 87, 88. 

 notes, (27) 386; (36) 89. 

 paper on, (27) 189. 

 principles, (27) 290. 

 specifications and tests, (27) 587. 

 studies, (28) 890. 

 system, (37) 286; (40) 587. 

 treatise, (26) 588; (33) 585, 586; (37) 587. 

 use of — 



day labor in, (35) 286. 



explosives in, (26) 91; (29) 182; (31) 589; 



(33) 90. 

 pumps in, (34) 283. 

 small waterfalls for, (36) 89. 

 water — 



analyses, (27) 320. 



composition, (27) 19. 



composition as aflected by vegetation, (26) 



421. 

 composition, seasonal variation, (32) 123. 

 from unmanured and uncropped land, (32) 



121. 

 loss of fertilizer constituents in, (27) 519. 

 waters of Africa, barrages for, (40) 717. 

 work, conversion table and diagram for, (27) 87. 

 work, heavy, excavating plant for, (33) 288. 

 Draining the Zuider Zee, (40) 487. 

 Drainpipe deposits in swamp soils, (31) 721. 

 Drains, pipe, renovation, (31) 685. 



Draintile— 



cement, in alkali soils, (39) 86; (40) 386. 



concrete, durability, (35) 386; (39) 393. 



mixtures and mixing for, (40) 787. 



reinforced, tests, (40) 787. 

 Drakes, reproductive organs of, (26) 876. 

 Drasterius livens, notes, (30) 758. 



Drawing — 



agricultural, textbook, (34) 487, 598. 

 in agricultural schools, (36) 597. 

 Dredgers, suction, manual, (37) 585. 

 Dredges, use in land drainage, (34) 189. 

 Dredging machinery, description, (30) 289. 

 Drepanidae of Japan, (39) 262. 

 Drepanothripsreuteri, notes, (28) 354. 

 Drexel aerological station, (32) 810; (36) 419. 

 Dreyfusia piceae, notes, (26) 147; (35) 256. 

 Dried blood — 



adulteration and use, (38) 711. 



amino acid in, (33) 665. 



ammonification in soils, (32) 817; (33) 808; (34) 



127; (36) 25. 

 analyses, (28) 364; (32) 169; (34) 263; (39) 222. 

 as affected by calcium and magnesium carbon- 

 ates, (28) 523. 

 availability, (40) 125. 

 availability— 



as aflected by soils, (32) 516; (34) 130; (39) 726. 

 in presence of sodium nitrate, (38) 723. 

 in soils, (36) 819. 



of nitrogen in, (26) 124; (27) 723; (28) 724, 

 725; (35) 123, 426; (39) 817. 

 composition and u.se, (39) 117. 

 decomposition by Streptothrix, (27) 620. 

 decomposition in soils, (36) 116; (39) 814. 

 distribution of nitrogen in, (36) 269. 

 eftect on- 

 acid soil, (39) 627. 

 activity of soil fungi, (36) 215. 

 ammonification, (28) 724. 

 carnations, (36) 445. 

 composition of wheat, (38) 518. 

 lime requirement of soils, (28) 122. 

 maturity of cotton, (31) 40. 

 nitrification, (26) 721. 

 osmotic pressure of soU solution, (39) 324. 

 soU acidity, (28) 137. 

 solubOity of calcium and phosphoric acid, 



(39) 24. 

 tomatoes, (29) 339. 

 fertUizing value, (26) 534, 838; (27) 321, 325; (28) 

 724, 725; (29) 129; (30) 324, 835; (31) 124, 731; 

 (32) 516, 831; (34) 128, 129, 131, 219, 520; (35) 

 535; (36) 121, 818; (37) 449, 627; (38) 218, 220, 

 517; (39) 31, 32, 327, 623, 817. 

 for arid soils, (36) 726. 



carnations and roses, (29) 840. 

 potatoes, (32) 739. 

 sugar cane, (32) 336. 

 loss from soils, (29) 211. 

 nitrification, (31) 724. 

 nitrification — 



as affected by lime, (38) 119. 

 in acid soils, (30) 626. 

 in semiarid soils, (37) 319. 

 in soils, (39) 814. 

 notes, (31) 323. 



preparation in army slaughterhouses, (37) 321. 

 production and use, (27) 327; (29) 517; (30) 126. 

 V. nitrate of soda for cotton, (31) 630. 

 Dried-fruit beetle, notes, (34) 454. 

 Dried grains in ration, effect on bulk of manure, (40) 



126. 

 Drinking glasses, sterilization, (38) 663. 

 Dropsy- 

 epidemic, investigations, (26) 155. 

 in cattle at high altitudes, (32) 781. 

 Drosicha lichenoides n.sp., description, (29) 255. 

 Drosophila— 



ampelophila, see Pomace fly. 

 confusa, rearing on sterile media, (31) 63. 

 crossing-over in, (35) 867. 

 hereditary tumor in, (40) 860. 

 melanogaster, food of, (38) 61. 

 mutations in, (331 758. 

 obscura, notes, (27) 54. 

 paradoxa n.sp., description, (40) 860. 

 segregation of fecundity factors in, (30) 267. 

 sex chromosomes in, (31) 865. 

 spp., notes, (26) 349. 

 Drought— 



at New York City, (32) 810. 

 distribution in Sicily, (31) 716. 

 effect on composition of grasses, (28) 533. 

 frequency during crop-growing seasons, (33) 815 , 

 in Georgia, (26) 27. 

 Louisiana, (29) 812. 



