106 INDEX TO YEARBOOKS, 1901-1905. 



Niobrara forest reserves, systematic forestation, 1902, 141. 



Nitragin, failure in commercial use, 1902, 340. 



Nitrate of soda, use in peach orchard, remarks, 1902, 624-625. 



value in sugar-beet cultivation, experiment, 1904, 29. 

 sodium, in irrigation waters, effect, 1902, 289. 

 Nitrates in water, "local normal" as aid in judging effect, 1902, 285. 

 of ChUe and Peru, rate of exhaustion, remarks, 1902, 335. 

 supply of oxygen, note, 1901, 170. 

 See also Plant food. 

 Nitrification in some southern soils, relative rates, 1903, 170. 



influence of lime and stable manure, 1903, 170-174. 

 Nitrites in water as indication of fermentation, 1902, 284r-285. 



Nitrogen, amount annually withdrawn by crops from this country and restoration 

 by legumes, notes, 1902, 227. 

 as constituent of plant food, 1901, 167. 



balance in Department of Agriculture preservatives study, 1903, 300. 

 content of wheat, importance, note, 1901, 305. 

 danger of excess for chrysanthemums, notes, 1902, 564, 56£^ 

 dangers to growth, note, 1901, 171. 

 effect on growth of plants, 1901, 168. 

 fixation, work, 1905, 40-41. 



working out of problem, remarks, 1904, 124-125. 

 formula for supply in peach orchard, 1902, 625. 

 gathering and storing by leguminous crops, remarks, 1903, 182. 



bacteria, remarks, 1901, 26. 

 in corn, differences and possible development, 1902, 221. 

 loss and production, discussion, 1902, 333-336. 

 organic form, sources, 1902, 568. 



problem and bacteria, article by George T. Moore, 1902, 333-342. 

 production as object in plant breeding, 1901, 223. 

 waste in explosives by war, remarks, 1902, 334. 

 Nitrogen-fixing bacteria, discussion, 1902, 336. 



inoculation of soil, improved method, 1902, 340. 

 remarks, 1902, 21; 1903, 29; 1904, 49. 

 Nitrous acid, danger to plant growth, note, 1901, 171. 

 Nocard and Leclainche, conclusion as to tuberculin tests, 1901, 586. 



remarks on efficacy of tuberculin test, 1901, 583. 

 "Nocatee," hybrid of tangerine and pomelo, note, 1904, 235. 

 Normandy, dairy cattle, discussion, 1902, 147-148. 

 North Carolina, convicts on roads, ten years' employment, 1901, 321. 



cotton consumption, discussion, with historic notes, 1903, 468-470. 



crude drugs, large shipment and diminution of supply, l903, 337. 



effect of environment on wheat, note, 1901, 302. 



farm lands, prices, 1905, 523. 



grape growing, experimental, note, 1902, 26. 



law for employment of prisoners on roads, 1901, 322. 



leasing of shooting privileges, 1904, 519-520. 



macadam roads in Mecklenburg County, 1901, 331. 



Newborn, and Tarboro, good sand-clay roads, 1903, 264-265. 



public schools, method of maintaining, 1901, 139. 



results of soil survey, 1901, 47. 



soil survey Raleigh-Newbem section, report showing failure, 1901, 129. 



surveys for tobacco, 1901, 125. 

 soils, areas surveyed, 1905, 619. 

 tree-pest investigation, note, 1904, 83. 

 Central States, agricultural progress, 1903, 14. 

 cotton consumption, increase in past twenty years, 1903, 477. 

 Dakota, public control of irrigation, 1901, 682. 

 soils, areas surveyed, 1905, 619. 

 windbreak, 1904, 265. 

 development and need of hardy peaches, 1903, 272. 

 evergreens, use in home adornment, 1902, 514. 

 soils, difference from soils of South, and advantages, 1903, 164. 

 Northern soils, difference from Southern soils, 1903, 169. 

 Norway, scenic attractions and their profits, 1901, 530. 

 Novaculite, road building material, notes, 1904, 325, 327. 



gravel in Illinois, use in Tennessee, 1903, 459. 



