INDEX OF SUBJECTS. 



991 



Page. 



Soil mapping, studies 117 



moistTure, available, lower limit of 214 



eflect on growth of buckwheat. 718 



oats 719 



investigations 21 



notes 514 



studies, Pa 820 



nitrates, eflect on trees, Colo 814 



physics, studies 620 



productivity as affected by earthworms . . 81 7 

 relation to dihydroxystearic 



acid, U.S.D.A 724 



purity, conservation 515 



samples, examination, U.S.D.A 320 



sanitation in the Tropics, treatise 541 



sickness, investigations 724 



solution investigations, notes 422 



surveys in England 818 



United States, U.S.D.A 817 



tank, description 117 



water, eflect on acclimatization of 



plants 28 



Soiling crops, fertilizer experiments 427 



for cows 478 



tests. Pa 530 



varieties 427 



Soils, absorption of moisture by 514 



absorptive capacity 21 



determination 620 



action of protozoa in 422 



alkali, crops for, U.S.D.A 328 



formation 621 



studies, S.Dak 511 



utilization and improvement 511 



ammonia and nitrate formation in 520, 622 



N.J.. 423 



analyses 415, 621 



Fla.. 427 



K.ajak 625 



P.R 794 



arid, mechanical analysis 513 



as affected by carbohydrates 515 



lime and hmnus 823 



manganese 122 



wind, U.S.D.A 424 



availability of phosphoric acid in, Va . . . 822 



bacterial activity of 823 



content, Nebr 816 



bacteriological investigations 226, 227 



bacteriotoxins in 525 



biological-chemical processes in 514 



Carrington loam, U.S.D.A 625 



cartographic grouping 819 



Cecil clay, U.S.D.A 426 



sandy loam, U.S.D.A 426 



Clarksville silt loam, U.S.D.A 625 



classification 21, 116, 117 



clay and granitic, potash requirements . 725 



classification 319, 819 



movement of nitrates in 116 



plasticity 118,319 



Clydeloam, U.S.D.A 625 



color of, U.S.D.A 424 



cultivated, circulation of water in 116 



physical analysis 22 



Dekalb silt loam, U.S.D.A 62S 



Page. 

 Soils, effect of aspect and forest cover on water 



content 140 



on acclimatization of plants 28 



atmospheric radioactivity 718 



composition of plants 120 



plant growth 515 



enzymatic activity in 320 



evaporation from, Nev 823 



Fargo clay loam, U.S.D.A 625 



fertilizer requirements 321 . 



fixation of nitrogen in, Colo. ,. .. 814,815 



forest, fertilizer requirements 21 



frozen, bacterial content 227 



granitic and gneiss, relationship 819 



gmnbo, of Iowa, Iowa 19 



Hagerstown loam, U.S.D.A 426 



heath, improvement 626 



of Uckermvinde, studies and bib- 

 liography 426 



use of fertilizers on 726 



heavy clay, management. Wis 19 



improvement 629 



humus formations in 817 



hygroscopicity 723 



injurious bacterial conditions in 435 



inorganic phosphates in 624 



Knox silt loam, U.S.D.A 625 



lime requirements 424,725 



loess, of Turkestan, origin 819 



management 726 



manured, loss of ammonia from 726 



marsh, development. Wis 20 



improvement 216 



leaching, U.S.D.A 721 



use of fertilizers on 726 



MarshaU silt loam, U.S.D.A 625 



mechanical analysis 819 



Memphis silt loam, U.S.D.A 625 



methods of analysis 11, 12, 106, 392 



sampling 410 



Miami clay loam, U.S.D.A 625 



moor, acidity of drainage water of. 216 



methods of analysis 204 



occurrence of sulphuric acid in. . . 118 



of Germany, reclamation 216 



use of fertilizers on 726 



nitrification in, Hawaii 824 



N.C 816 



nitrifying power of, N. Y.Comell 438 



of Alaska, notes, Alaska 825 



Belgium, notes 511 



central New Mexico, notes 813 



Utah, notes 619 



Delhi, investigations 321 



East Africa, analyses 819 



eastern Florida, notes 18 



United States, U.S.D.A 119, 



320,426,625 



England, analyses 818 



German East Africa, notes 512 



Hawaii, manganese content 731 



notes, Hawaii 320 



Idaho, analyses 721 



Illinois, studies. 111 321 



India, analyses 231 



notes 437 



Iowa, notes 119, 721 



