SUBJECT INDEX 



541 



Soils — Continued. 



lateritic, studies, (33) 813. 

 lateritization, (28) 812. 

 lava, of Hawaii, studies, (33) 418. 

 lawn, notes, (27) 346. 

 leaching experiments, (35) 514. 

 lessons on, (26) 392; (28) 298, 393; (29) 395; (31) 

 394; (32) 596, 795; (33) 494, 617, 696; (35) 592. 

 light- 

 mixing with clay, (34) 819. 



sandy, irrigation and fertilizer experiments 

 on, (33) 286, 287. 



sandy, water economy of, (33) 287. 

 lime compounds in, (26) 322. 

 lime distribution and loss in, (29) 128. 

 lime-magnesium ratio in (26) 723. 

 lime requirement, (27) 216; (28) 122, 820; (29) 

 797; (31) 112, 726; (32) 30, 296, 311, 609, 610; 

 (33) 622; (34) 221, 814; (35) 21, 714; (36) 210, 

 519, 822; (37) 124, 212, 420, 622. 

 lime requirement — 



as aflected by fertilizers, (39) 623. 



as aflected by grinding, (35) 212. 



as aflected by heat, (40) 720. 



determination, (29) 797; (30) 422; (32) 296, 

 311, 609, 610; (35) 714; (36) 622; (37) 212, 

 622; (39) 322; (40) 213, 720. 



relation to aluminum content, (39) 115. 



relation to bacterial activity, (39) 325. 



relation to green manuring, (39) 424. 



relation to growth of clover, (35) 516. 

 limed and unUmed, carbon dioxld content, (36) 



197. 

 lithium in, (34) 323. 



loam and sandy, loss of plant food from, (30) 22. 

 loam, distribution of constituents in, (31) 618. 

 loess — 



composition, (27) 499. 



infertility of subsoils, (37) 20. 



of Nebraska, (35) 510, 809, 810. 

 southwestern Indiana, (32) 718. 

 southwestern Ohio, (32) 122. 

 transition region, composition, (28) 28. 

 transition region of Nebraska, (34) 806. 



origin, (27) 216; (29) 415. 



water-soluble material in, (36) 421. 

 loss of— 



ammonia from, (27) 21. 



calcium, studies, (39) 517. 



fertilizers from, (29) 211; (35) 812. 



plant food from, (35) 623. 

 lysimeter experiments, (27) 19; (29) 125; (31) 



24; (39) 517. 

 management, (26) 422, 717; (28") 537; (31) 318; 



(35) 30, 516; (36) 119, 813; (.■-!^> 719. 

 management, treatise, (31) 719. 

 manganiferous, of Oahu, Hawaii, (27) 118. 

 manual, (29) 315; (33) 95. 

 manured, loss of ammonia from, (27) 21. 

 manurial, of Mysore, analyses, (28) 223. 

 mapping, (27) 216, 720; (32) 26; (34) 321. 

 mapping, geological, m southern Bavaria, (28) 



717. 

 mapping in Germany, (28) 620. 

 Marion silt loam, (27) 18. 

 marling, (29) 19. 

 marsh, see Marsh soils. 

 Marshall silt loam, (27) 512. 

 meadow, fertilizer experiments on, (35) 516. 

 meadow, phosphoric acid and potash require- 

 ments, (26) 424; (40) 22. 

 mechanical treatment, importance, (26) 424. 

 Miami clay loam, (27) 512. 

 Miami series, (32) 317. 

 microbiological reaction of. (28) 425. 

 microbiology of, (26) 372. 

 mineral — 



consistency curves, (33) 420. 



constituents, (28) 215. 



plant food content, factors aflecting, (26) 814. 

 mineralogical analysis, (28) 812; (29) 19; (31) 206. 

 mineralogical analysis, treatise, (35) 16. 

 misconceptions concerning, (33) 721. 

 moistened, rise of temperature, (39) 617. 

 moistening, (33) 322. 

 moistness, interpretation of field observations 



on, (40) 211. 

 mold action in, (40) 122, 318, 721. 

 moor, see Moor arid Peat, 

 morphology, (28) 515. 



Soils — Continued. 



muck, see Muck soils, 

 niter, reclamation, (38) 323. 

 niter spots in, (34) 811, 812; (36) 423. 

 niter spots in, origin, (32) 199; (33) 121. 

 nitrate formation in, (27) 721; (29) 818. 

 nitrates in, (26) 723; (27) 419. 

 nitrates in, movement, (28) 813. 

 nitric nitrogen in, (27) 418. 

 nitric nitrogen in, effect of salts, (40) 722. 

 nitric nitrogen in, movement, (26) 616. 

 nitrification in, (26) 722, 810; (27) 419; (28) 814; 

 (29) 621; (30) 23, 399, 510; (31) 318, 420, 516, 722, 

 818; (33) 421; (36) 118, 513; (37) 318; (38) 211. 

 nitrifying power, (27) 517; (34) 218, 813. 

 nitrifying power — 



as an index to fertility, (32) 96. 

 determination, (31) 26. 

 nitrogen — 



and ammonia consuming power, (35) 730. 

 balance in, (27) 21. 

 carbon, and humus ratios, (28) 217. 

 content— s«e also Ammonification, Nitrifi- 

 cation, und Nitrogen, 

 as affected by bacteria, (31) 731. 

 as affected by clover, (27) 322. 

 cycle, (27) 517. 

 distribution in, (37) 517. 

 economy of, (26) 319. 

 fixation in, (29) 621; (34) 422. 

 metabolism of, (32) 514. 

 supply, maintenance, (37) 425. 

 transformation in, (23) 721; (30) 717; (31) 722, 

 818; (34) 423, 619. 

 nitrogenous compounds of, (32) 721. 

 nonprotein nitrogen of, (35) 120. 

 Norfolk sandy loam, (26) 120; (27) 512. 

 nucleic acids in, (26) 814. 

 of Abyssinia, notes, (30) 434. 

 Alabama, (27) 417. 

 Alabama and west Florida, (37) 810. 

 Alabama, Macon Co., (30) 19. 

 antarctic region, studies, (30) 818. 

 Antigua, (35) 214. 



Antigua, "gall patches" in, (37) 421. 

 Arad plains, (30) 213. 

 Argentina, analyses, (26) 719; (31) 215. 

 Argentina, studies, (30) 119. 

 arid and humid regions, (27) 117. 

 arid regions, bacteriology, (27) 822. 

 Asiatic Russia, investigations, (26) 621. 

 Auckland, analyses, (26) 318. 

 Belgian Kongo, analyses, (34) 718; (37) 622. 

 Bessarabia, studies, (30) 320. 

 Bihar, phosphate depletion, (38) 118. 

 Boston Common, rejuvenating, (26) 240. 

 British Guiana, analyses, (30) 421. 

 Burirhat Station Farm, analyses, (27) 417. 

 Burma, Yamethin District, analyses, (28) 



516; (29) 736. 

 CahuUla Basin, (33) 215. 

 California, analyses, (34) 324. 

 California, distribution of humus in, (29) 415. 

 California, humus content, (30) 714. 

 California, management, (30) 625. 

 California, manual, (30) 420. 

 Canal Zone, (27) 19. 

 Cape Colony, analyses, (35) 20. 

 Cape of Good Hope, (33) 419. 

 Central Park, New York City, (26) 222. 

 Chile, radioactivity, (27) 520. 

 citrus groves, studies, (39) 421. 

 Coastal Plain of Virginia, (28) 422. 

 Colorado, ammonifying eflBciency and algal 



content, (29) 819. 

 Colorado, nitrates in, (31) 619. 

 Colorado, nitrifying efficiency, (30) 818. 

 Coquimbo, Chile, analyses, (27) 431. 

 Cuba, analyses, (36) 511. 

 Cuba, analyses and fertilizer needs, (29) 416. 

 Cumberland Plateau, improvement, (30) 820. 

 Delaware, fertilizer and lime requirements, 



(39) 116. 

 Deli, analyses, (30) 320. 

 Department of Yonne, studies, (26) 519. 

 Dutch East India, fertilizer needs, (28) 717. 

 Dutch East Indies, (30) 697; (38) 542. 

 Dutch East Indies, mineralogy of, (35) 119. 

 East Africa Protectorate, (28) 423; (33) 512. 

 East Friesland, (30) 321. 



