INDEX OF SUBJECTS. 



1297 



Va.se. 

 Nitrate of soda— Continued. 



effect on nitrogen fixation 1115 



potato skin development 333 



productivity of soils 919 



soil teuiperatures 619 



fertilizing value 20, 21, 122, 220, 



319,320,428,429,430,522, 

 523,623,624,626,639,640, 

 722,723,727,821,922,923, 

 924, 931, 933, 1018, 1127 



AIa.Canel)rake 1030 



(la 1036 



Hawaii 138,140 



Mass 327, 339 



Md 238 



N.Mex 237 



Pa 1017 



R.I 142,538 



U.S.D.A 536 



Va 334 



imports into Italy 728 



impurities in 722 



loss from sandy soils 1019 



preparation and use 122 



production in the United States 826 



statistics 22 



substitute for 1021 



Nitrate organisms, studies 518 



Nitrates — 



as soil renovators 122 



assimilation l)y roots 521 



atmospheric, manufacture 688 



Chilean, composition 824 



detection in water 1 105 



determination in water 1105 



effect on oxidation in soils, U.S.D..V 1016 



in foods 165 



plants 165 



sea water 15 



seeds 165 



snow 15 



manufacture 523 



Norwegian and.Chilean, comparison 220 



preparation, use of peat in 823 



production in soils, Tex 425 



reduction 218 



solubility, studies 921 



Nitric acid- 

 action 00 alkaline soils 821 



detection in water and sewage 909 



determination 8,807, 1104 



in sewage 909 



soils 208 



water 308,909 



manufacture 824 



Nitrification— 



as affected bj' organic matter 218 



in acid soils 621 



calcium cyanamid 725 



sea water 716 



sewage 616, 914 



soils 518, 519, 522, 717, 718,821 



Tex 424 



as affected by humus, Minn 436 



studies 717 



various fertilizers, rate 1019 



I 'age. 

 Nitrification— Continued. 



investigations 23,322,518,519,522,723, 1115 



Ga 519 



Nitrifying organisms, acclimatization 1018 



Nitrite organisms, studies 518 



Nitrites, detection in water 1105 



determination in water 1105 



distriliution in foods, Minn 563 



in flour, N.Dak 860 



sea water 15 



snow 15 



water, formation 1] 12 



Nitrobacter, pure cultures, Ga... 519 



Nitro-bacterine, tests 1116,1117 



Nitrogen — 



ammonia, as affected by lime 622 



fixation by zeolites 622 



assimilation by legumes 620, 1015 



atmospheric — 



assimilation by micro-organisms, bil)- 



liography 121 



plants 121 



investigations 325 



flxation 18,24, 316, 



523, 729, 730, 920, 1006, 1115, 1116 



bibliography 223, 920 



Ijy Bacillus astcrosporus 920 



electricity 223 



hyphomycetes 17 



leaves 620 



plants 620,919 



manufacture of ammonia from 823 



oxidation 1021 



review of literature 421 



precipitation 220 



utilization 23, 223, 523, 624, 924 



byplants 520 



atomic weight 800 



bacteria, nutrition 718 



ca{)ac!ty of cultivated soils 122 



determination 311, 908 



and bibliography 806 



apparatus for 311 



in calcium cyanamid 1007 



feces 420 



fertilizers ill. 



gas mixtures 208 



soils 208 



effect on assimilation of potash by plants. 72C 



carnations, Md 238 



food assimilation by ))eans 229 



gain in weight of sheep 1171 



plants, Md 238 



sugar l)eets. Wis 35 



fertilizing, treatise 220 



value 338,539,541 



Iowa 230 



I'a 1017 



fixation as affected by glucose 626 



by bacteria 316 



calcium carbonate 824 



investigations 17,621 



fixing bacteria as affected liy zinc 622 



review of literature 520 



studios 021 



industries in Australia 688 



