INDEX OF SUBJECTS. 



897 



Soil fertility— ("oiitinued. I'liKO. 



investigations 115 



maintenance "19 



Miss 74 



Ohio 216 



Tenn 156 



new theory 313 



notes, N.Y.Cornell 117 



relation of linie and magnesia to, 



r. R 624 



studies, Wyo 528 



' value of humus in 717 



variation in. Pa 217 



inoculation, artificial cultures for 198 



experiments 120, 220, ,'U3, 418 



for alfalfa, N. Dak 535 



N.Y. State 38 



clover, N.Y.Cornell 133 



leguminous plants 528 



investigations — 



importance 20 



tanks for, description 117 



wire-basket method, N.H 719 



management for orchards, Pa 237 



minerals, solubility of potash in, N.II . . . 71.') 



moisture, conservation 219, (538 



Pa 2.38 



determinations, Fla 313 



Wyo 03 



eCEect on nitrate of soda 720 



ripening of wheat 434 



tree growth 47 



formation 717 



investigations, Idaho (517 



movements as aflected by the atmos- 

 phere, U.S.D.A 112 



mulches, effect on evaporation, U.S.D.A. 717 



partiMes in water, studies 410 



physiography, Vt 531 



resources of Wisconsin 217 



samples, preparation for analysis 519 



solutions, studies 19 



surveys in Alabama 124 



Indiana 718 



South Carolina 218 



the United States, U.S.D.A . . 617, 

 618,799 



Wisconsin 217 



relation to geology 311 



temperatures, investigations 20, 117 



studies. Pa 219 



tests with forest seedlings 336 



Soils, absorption of fertilizers by 19 



acid, detection 703 



reaction in 18 



ammonification in 619 



analyses 19,111, 22(i, .308, 31 1 . 425 



Fla 311 



N.Mex IS 



N.Y.State 2:i<i 



Pa 217 



S.Dak 41 



Tenn 116 



Wyo 528 



variations in 198 



application of nitrate of soda to 720 



a(iueous e.xtraction , studies 520 



. I 



Page. 



Soils, as allected l)y fertilizers, Hawaii 541 



steam 716 



sulphurous acid 219 



bacteriological investigations 117, 



118, 313, 41ti. 528, 620 



bibliography 219 



black, of Russia, analyses 718 



catalase in, studies, P.R 220 



chernozem, investigations 528 



clay, potash requirements, N.H 714 



reaction with soluble carbonates, 



N.H 714 



composition as allected by— 



plant residues 312 



steam 198 



conservation 621 



cultivated , distribution of potash in . . . 715 



denitrificalion in 20,24, 118, 119, 4li'). 716 



diSusion of fertilizers in L'3. 621 



eflect on bone meal 118 



composition of plants, Wyo... 34 



wheat 262 



germination of hemlock seed.. 443 



plant activity 20 



solubility of potash, N.H 715 



erosion in the South, prevention 219 



exhausted, reclamation 219 



fertilizer requirements 621 



R.I 212 



Tenn 116 



forest, analyses 18 



nitrification in 21 



treatise 18 



formation 117 



lime and magnesia for 9 



requ irements 527 



loss of plant food from, as afleetod by 



organic matter, Fla 313 



mineral substances in, relation to plant 



diseases 640 



moor, bacteriological investigations 118 



nitrification in 21 



muck, reaction with salts, N.H 713 



treatment, U.S.D.A 691 



niter, analyses .■)28 



nitrification in 20.21,118.119.416,610,716 



N.C 119 



as affected by carbon lii- 



sulphid 716 



nitrogen content, Wyo 528 



determination, N.J. . 530 



variations in 417 



economy in 417 



in, studies 716 



noniiilrifying, in North Carolina 22 



of Argentina, analyses 311 



Bengal, notes 718 



Florida, chvssification 619 



(ieorgia, analyses, U.S.D.A .528 



Idaho, analyses, Idaho 617 



Kentucky, analyses, Ky 331 



Mauritius, manganese in 717 



Mexico, analyses 718 



Nevis, I.K'eward Islands, analyses. . . 718 



New Zealand, analyses IS 



North Carolina, bacteria in 6i!i 



