INDEX OF SUBJECTS. 



969 



Nitrification— Pege. 



as affected by carbon bisulphid aJid 



toluol 717 



in acid humus soils 424 



in acid or nonbasic soils, Ga 517 



in pasture soils 390 



in soils and solutions 218 



in soils as affected by radio-activity 30 



in soDs as affected by spray mixtures . . 423, 424 



in tilled and untilled fallow 216 



review of investigations 11 



Nitrites— 



assimilation by ])lants 219, 824 



localization in plants 30 



Nitrogen- 

 accumulation in continuous rye culture. . 424 



assimilation by legumes 435 



assimilation by living organisms 323 



atmospheric, assimilation by mycorrhiza. 826 

 atmospheric, assimilation by yeast and 



fungi 629 



atmospheric, utilization 11, 26, 721 



compounds, availability for higher plants 324 



determination 504 



determination in humus 112 



determination in organic substances 807 



determination in raw rubber 615 



determination, micro-Ivjeldahl apparatus 



for 505 



economy of nature, relation to cellulose 



decomposition 424 



effect on must and wine 612 



elimination as affected by diet 864 



exchange during fasting 260 



fixation as affected by colloids 431 



fixation as affected by soluble humates . 431, 721 



fixation by grass-green algae 727 



fixation by soil bacteria 217 



fixation in soils, Colo 818 



green manure, accumulation in stuidy 



soils 24 



in amylase preparations from pancreas 



and malt 463 



in rain and snow 211, 815 



injurious, in sugar beets 15 



injurious, in sugar-cane juice 15 



lime. (See Calcium cyanamid.) 



metabolism during underfeeding 764 



metabolism in Aspergillus niger 727 



metabolism of 465 



retention afterfeeding of urea 169 



Nitrogenous — 



compounds, nonproteid, effect on nitro- 

 gen intake in pigs 871 



fertilizers, availability, N.J 324 



fertilizers, comparison 125' 626, 632 



fertilizers, comparison, W . Va 839 



fertilizers, sources of in United States, 



U.S.D.A 126 



fertilizers, transformation in soils 717 



plant foods, inorganic, behavior in sun- 

 light 823 



North Carolina Station, notes (iOO 



North Dakota- 

 College, notes 95, 798 



Station, notes 95 



Station, report 696 



55087°— 14 6 



Nose ma — Page. 



apj> pathogenic to inscetsotherthan bees. 459 



bombycis, review of investigfftions 549 



ichn<umonis, notes 857 



Novius cardinalh, acol imation In F^rance 554 



Nucleases, noplu-lomelry in study of 410 



Nucleic acids and their cleavage products.. . 20l 



Nudein feeding of aninial.s 07 



Nun moth, notes 755 



Nursery — 



in.spection in Colorado 249 



inspection in Connecticut, Conn.State. . . 654 



in-spection in I'lorida 249 



inspocfion in New Jersey, N.J 349 



inspection in South Carolina, S.C 346 



inspection law in Arkartsas, .Vrk 534 



stock, fumigation, Ark 657 



Nursing service, rural, of -Vmcrican Red 



Cross 793 



Nutrition— 



and diet, text-book 463 



animal. (Sfc Animal nutrition.) 

 effect on gaseous metabolism of cold- 

 blooded animals 563 



handbook 63 



investigations of Office of E.xperiment 



Stations 258 



modem theories 764 



{See also Digestion, Metabolism, etc.) 



Nuts- 

 culture in southern Utah, Utah. 442 



varieties, Mich 640 



varieties, Utah 41 



Nymphxa mciicana as a duck food, U.S.D..V . 545 



Oak- 

 heart rots, studies, U.S.D.A 52 



mildew, notes 544, 053, SI9 



root diseases, notes. Mass 147 



Oaks- 

 chestnut, twig blight of, U.S.D.A 453 



dying, notes, Conn.State 655 



red, pith-ray flecks in, U.S.D.A 855 



root parasite of, U.S.D.A 3.J4 



Oat— 



diseases, studies and bibliography, 



U.S.D.A H46 



Fu-sarium diseases in Bavaria 748 



grass, seeding on ranges, U.S.D..\ 35 



grass, tall, analyses 565 



gr;^s, tall, varieties 434 



hulls, analyses 868 



hybrids, dominant and recessive charac- 

 ters in 33 



seedlings, phototropLsm in 725 



smuts, cause and treatment 47 



white heads or tako-all, notes 1 48 



Oats— 



analyses 528 



analyses, U.S.D.A 434 



catalytic fertilizers for 627 



change in weight during storage, Utah. . . 639 



classification " 528 



cultivated, origin 338, 527 



culture, U.S.D.A 434 



culture experiments 33, 13.3, 527, 632 



culture on moorland 229 



distance experiments "32 



