INDEX OF SUBJECTS. 



975 



Nitrogen — Continued. Page, 



ammonia, determination Id 



urine 613 



atmospheric, utilization by rad- 

 ishes 218 



availability in mineral and or- 

 ganic compounds, N.J 621 



cycle in nature 423 



determination 10, 504 



determination in vegetable mat- 

 ter 410 



determination in waters and ef- 

 fluents 410 



fixation in soils 422, 423 



fixation in soils, U.S.D.A 619 



free amino, in proteins of ox 



and horse serum 501 



in humus of arid soils, U.S.D.A_ 719 



in processed fertilizers 327 



in seeds of Acacia pycnantha 729 



lime. (See Calcium cyanamld.) 



long-continued use. Pa 128 



loss in cultivated soils 516 



nitric, in chernozem soils 618 



transformation in moor soils 18 



water-insoluble, in fertilizers. 



Mass 625 



water-soluble, in feeding stufifs_ 72, 501 



Nitrogenous fertilizers — 



availability, Cal 219 



comparison— 24, 25, Sf 518,622,820 



comparison, N.J 129, 621, 622 



for arid soils 621 



for cranberries, N.J 150 



for meadow soils 22 



history and manufacture 423 



manufacture 622 



use in arid regions, Cal 219 



Nitrous acid, occurrence in plant sap- 627 



Nonelectrolytes, effect on action of 



alcohol on plant cells 333 



North Carolina — 



College and Station, notes 296, 496 



Station, report 95 



North Dalcota — 



College, notes 496 



Station bulletins, index, N.Dak_ 796 



Station, notes 798 



Novius cardmalis, notes 851 



Nummularia discreta — 



effect on apple bark 136 



notes 247, 646 



transmission by tree crickets 653 



Nursery — 



experimental and research sta- 

 tion in Hertfordshire 199 



inspection in Colorado 651 



inspection in Hawaii 59 



Inspection in New Jersey, N.J 153 



inspection law in Florida 232 



inspection law in Texas 737 



stock, die-back disease of 353, 646 



stock, insects affecting 251 



stock laws in United States and 



Canada 40 



Stock leaf diseases, treatment, 



N.Y.CorneU 747 



Page. 



Nutmeg thread blight, notes 841 



Nutrition — 



animal. (See Animal nutri- 

 tion.) 



effect on growth of the brain __ 662 

 effect on sexual development of 



plants 824 



Laboratory of Carnegie Insti- 

 tution, report 764 



plant. (See Plant nutrition,) 



review of investigations 7)2 



summary and digest of data 255 



treatise 658 



value of extractives in 258 



(See also Digestion, Metabol- 

 ism, etc.) 

 Nuts- 

 culture experiments, U.S.D^ 231 



varieties, U.S.D.A 231 



varieties for Georgia 436 



Nymphwa alba, chemistry and an- 

 atomy of 522 



yymphula depunctalis, notes 250 



Oak- 

 honeycomb heart rot, studies, 



U.S.D.A 448 



Oldium, studies 650 



reddish or brown heartwood of, 



studies 849 



twig pruner, notes 752 



Oaks — 



histological variations in 440 



red, culture and value, Ohio 639 



scarlet, disease of 448 



Oat- 

 diet, exclusive, injurious effects. 366 

 grass, tall, moisture content 



and shrinkage, U.S.D.A 828 



grass, tall, palatability, Ohio 865 



hulls, analyses, N.J 665 



rusts in Canada 51 



smut, ti'eatment, Ind 744 



straw, analyses 164 



straw, composition and digesti- 

 bility 565 



Oats- 



add poisoning due to 766 



analyses 630 



analyses, Wyo 668 



and peas, cost of production, 



N.J 137 



composition as affected by fer- 

 tilization and soil prepara- 

 tion 230 



culture, Ga 138 



culture, S.C 694 



culture experiments, Ohio 631 



culture experiments, Oreg 228 



culture experiments, U.S.D.A. 137. 228 



culture under irrigation, Colo — 528 



effect on milk and butter 570 



effect on soil moisture 17 



feeding value, Tenn 867 



fertilizer experiments 22,24,327, 



330, 423, 517, 518, 622, 726, 820 



fertilizer experiments. Mass — 294 



