1917] 



INDEX OF SUBJECTS. 



961 



Nicotiana vUcomm, mosaic disease of, 



U.S.D.A 451 



Nicotin— 



insecticidal value, U.S.D.A 152 



sulphate sprays, wetting power and effi- 

 ciency, U.S.D.A 455 



Niter spots in western soils, origin 423 



Nitrate — 



formation in acid soils 22 



Norwegian. (See Calcium nitrate.) 

 of lime. (See Calcium nitrate.) 

 of soda. {See Sodium nitrate.) 



Nitrates- 

 absorption by legimies 329 



in orchard soils, N.H "24 



in soils as affected by soil moisture and 



manure, U.S.D.A 816 



leaching in soils in winter 1 19 



movement in soils, Cal 118 



Nitric nitrogen — 



determination 504 



in country rock 423 



Nitrification— 



as affected by soil moisture 513 



factors affecting 321 



in sandy loam soils 321 



in semiarid soils, U.S.D.A 422 



in soils, Cal 118 



insoils, N.Y.Comell 724 



in soils, nature 513 



Nitrites, determination 203 



Nitrocultures, preparation and use 827 



Nitrogen- 

 absorption and leaching in soils 219 



action on musts and wine 801 



atmospheric, fixation by electricity 122 



availability in fertilizers 818 



compounds, synthesis by plants 631 



determination 14, 316 



determination in algse 202 



determination in calcium cyanamid 426 



determination in soils 711 



determination, Kjeldahl apparatus 14 



fixation as affected by soil moisture 513 



fixation by fungi 632 



fixation, factors affecting 321 



in coagulum and serum of Hevea latex . . 710 



increase in, fermenting manures 217 



lime. (See Calcium cyanamid.) 



nonprotein, determination in blood 316 



nonprotein, of feeding stuffs 205 



nutrition of mold fungi 527 



sources in United States 122 



Nitrogenous fertilizers — 



availability, determination 726 



comparison, Mass 121 



comparison, N.J 818 



comparison, Wis 626 



for arid soils 726 



for oranges, U.S.D.A 642 



North Carolina- 

 College, notes 99, 295, 500, 696 



credit union 289 



Station, notes 295,500,696 



North Dakota- 

 College, notes 899 



Station, report 498 



Page. 



Nosema— 



apis, notes 258 



apis, notes, Nev 53 



pulicis n. sp., notes 257 



Numularia in Indiana 542 



Nupserha sp. affecting soy beans 157 



Nursery- 

 experiments, error in, Mich 735 



stock diseases, treatment, N. Y.Cornell . . 750 



Nut industry in America 445 



Nutrient solutions — 



automatic renewal 433 



comparative studies 224 



effect on plant gro^vth 630. 631, 731 



effect on secretion of diastase by Penicil- 



lium camembertii., 328 



physiological balance in 212, 328 



repeated growing of plants in 631 



Nutrition- 

 animal. (See Animal nutrition.) 

 in relation to microorganisms of air and 



food 562 



investigations of Carnegie Institution 763 



laboratory manual 396 



lectures on 865 



plant. (See Plant nutrition.) 



(See also Digestion, Metabolism, etc.) 



Nutritional deficiency diseases, review and 

 bibliography 363, 663 



Nuts, edible and oil-producing, in West 



Africa 611 



Nysius ericx {angustalus), remedies, U.S.D.A 154 



Oak— 



Moreh, notes 243 



unit stresses for 91 



Oaks- 

 bitter, notes 540 



Irish, composition and mineral constit- 

 uents 804 



with persistent foliage, leaf structure 330 



Oat- 

 aphis, remedies. Wis 857 



diet, effect on guinea pigs 364 



fodder, analyses, Can 65 



hay, injurious effect on horses 280, 580 



hulls, analyses, N.J 167 



middlings, analyses, Ind 268 



middlings, analyses, Mich 765 



mildew, notes 541 



proteins, supplements for 560 



smut in Indiana 542 



smut, treatment 449 



sprouter, description, Wash 75 



straw, analyses. Can 65 



straw V. alfalfa hay for steers, Can 269 



Oats- 

 analyses, Can 65 



as affected by companion crop of mustard 438 



breeding experiments 336, 834 



crushed, analyses, Tex 765 



crushed v. whole, for work horses. Wis . . . 866 



culture, Vt 530 



culture experiments, Alaska 436 



culture experiments. Can 32 



culture experiments, U.S.D.A 33, 132, 830 



culture on Wisconsin drift soU, Iowa 623 



culture under dry farming 629 



