1322 



EXPERIMENT STATION RECORD. 



Page. 

 Soil fertility— Continued. 



l)Ook 16 



cliemical principles 819 



III 819 



climatic and geologic factors 314 



effect on yield of crops 918 



exhaustion 917 



investigations, 111 819 



maintenance 1022 



Ala.Canebrake 1030 



Ohio 428 



Pa 1017 



Tenn 666 



new tlieories 721 



relation to soil composition, Wash. . 117 



role of oxidation in, U.S.D.A 1016 



tests 918 



improvement 119,122,229,820,1115 



111 125,428,1022 



Ind 1017 



P.R 32 



Wis 29 



in Belgium 720 



natural agencies in 217 



inoculation — 



cultural conditions 719 



experiments 121,316,819 



N.Y. State 19 



Wis 33,34 



for alfalfa, Kans 438 



leguminous plants, N.Y. State. . . 920 



nonleguminous plants 520 



serradella 740 



notes 819 



investigations — 



Fla 116 



at Aarslev 916 



In the United States, U.S.D.A 915 



principles 1113 



moisture — 



as affected by plowing, U.S.D.A 436 



capillary rise of 517 



conservation 714, 918 



Utah 814 



determination 832 



effect on fertilizers 724 



in river plains, studies 709 



investigations 711 



Idaho 214,293 



nitric nitrogen in 717 



studies 714, 919 



resources, conservation, U.S.D.A 893 



sampler, description 613 



sickness, causes 120 



surveys, U.S.D.A 293 



in southern Indiana 715 



the United States 314 



various countries 16 



temperatures, Mont 293 



bibliography 712 



in different countries 712 



investigations 619, 620 



studies 713 



tests, Mass 327 



with fertilizers, basket method, R.I. 521 



toxicology, methods 120 



Page. 



Soiling crops for cows, Miss 474 



Pa 373,394 



Soils, absorption investigations, U.S.D.A 426 



of ammonia by 13 



acid, distribution in Florida, Fla 116 



fertilizer requirements 1114 



nitrification in 621 



alkali, clas.^ification 316 



formation 315 



growth of Azotobacter in 19 



reclamation, U.S.D.A 427 



studies 818 



treatment with nitric acid 821 



use for rice culture 721 



ammonification in. Tex 424 



bibliography 217 



analyses 119, 709,916, 1014, 1110 



Hawaii 195 



N.Mex 195 



U.S.D.A 915 



as affected by carl)on bisulphid 518 



flue dust 831 



heat and antiseptics. 1015,1034 



soluble salts 919 



various substances 218,718 



bacteriological studies 718 



black fallow, productivity 918 



blowing, paper on, U.S.D.A 437 



bog, toxic properties 738 



buntersandstein, composition 216 



carbon dioxid in 218 



charting, value 618 



chernozem, phosphoric acid in 317 



cholesterol substance in 509 



classification 119,1113 



oroclimatic Vjasis 314 



clay content, determination 1007 



investigations 315 



potash requirements 221 



color of, effect on grapes 751 



composition— 



as affected by various factors, Minn . 435 



relation to soil fertility. Wash 117 



cultivated, absorptive power 817 



colloids in 818 



mineral constituents 818 



nitrogen capacity 122 



cultivation 891 



decomposition of organic matter in 398 



deep cultivation in Germany 119 



denitrification in 518 



dialysis of 218 



drying, bacteriology of 120 



effect on — 



keeping quality of pineapples, 



Hawaii 538 



nitrogen of calcium cy anamid 523 



potato-skin development 333 



electrification .* 630 



erosion and leaching, prevention 619 



eruptive, of Java, studies 716 



evaporation from. 1088 



as affected by bacteria 620 



fertilizer requirements 219,317 



N.H 219 



Ohio 20 



