INDEX. 



329 



New- York State Agricultural Soci- 

 ety, XV. 



Night air, 243. 



Nitrate of silver, 291. 



Nitric acid, 291. 



Nitrogen, an element of the atmos- 

 pheric air, 23S, 241. In all an- 

 imal substances, 289. 



Northern States, products of, G3. 



Nutrition, analogy between animal 

 and vegetable, 57, 188. 



O. 



Oak, specific gravity of, 284. 

 Weight of, 286. 



Oaks, on the declivity of the Cor- 

 dilleras of Anahuac, 202, note. 



Oat-grass, 226, 227, 229. 



Oats, exhaustion by, 190. Soil 

 for, 199. Weight of 287. 



pbject of life, 270. 



Obstacles to horticultural improve- 

 ment, 269. 



Office, Dean on Buel's ideas of, 

 xii. 



Oil, specific gravity of linseed, 284. 

 Of vitriol, in Glauber's salts, 

 29K 



Onions, wild, 123. 



Open furrows, 134, 140. 



Orchard grass, 228, 247. 



Ornamental gardening, 270. See 

 Gardening, and Rural. 



Outlays in agriculture, 273, 274. 



Ox, properties of the bones of the, 

 70 ; their specific gravity, 284. 

 See Bone-dust. 



Oxygen, as an element of atmos- 

 pheric air, 238, 241. Solid 

 state of, 289. 



Pace, length of the geometrical, 



285. 

 Pagoda of India, value of the, 



296. 

 Paring and burning, 210. 

 Paris, plaster of, see Gypsum. 

 Parke, facts in chemistry from, 



288-291. 

 Pastures, without alternation of 



28* 



crops, 154. On improving, 

 205. On manuring, 206, 207. 

 Weeds injurious to, 207. 

 Meadows used as, 208. Best 

 countries for, 224. Grasses for, 

 236. Objects in regard to, 236. 



Pear, varieties of the, 269. . 



Peas, weight of, 287. 



Peat earth and ashes, as manure, 

 73, 276. 



Peaty soils, reclaiming of, 47. 

 Classification of, 47. Crops for, 

 47. Grasses for, 233. 



Pendulum, standard of measures 

 from the, 285. 



Pennewell and Sipple, the farm 

 of, 25. 



Pennsylvania, average crops in, 

 in 1790, 23. Use of lime in, as 

 a manure, 81, 92. 



Periodicals, agricultural, 3, 281. 

 See Cultivator. 



Peters, on gypsum, as a manure, 

 89. 



Philadelphia Horticultural Society, 

 268. 



Philosophical facts, 291. 



Physics and mathematics, collec- 

 tions of facts in, 283. 



Pierce, Susan, married to Jesse 

 Buel, ix. 



Pigeons' dung, a manure, 203. 



Pints, 287. 



Pitch of ploughs, 128, 142. 



Pits, before digging drains, 108. 



Plane^ sec Inclined plane. 



Planting, seeds, 244, 247. Orna- 

 mental trees, 244, 253, 254, 

 258. Fruit trees, 254. See 

 Sowing. 



Plants, organized beings, 21. The 

 true food for, 35, 63, 65, 203. 

 Necessity of feeding, 38, 59, 

 188, 274 ; of taking care of, 

 as of animals, 60, 64, 274. 

 Number of, in meadows, 94. 

 Penetration of roots of, 114, 

 117. Remarks on the vitality 

 of, 119. Dillerent food for dif- 

 erent, 154. Culmiferous and 

 leguminous, 155, 156. Princi- 



