436 



INDEX. 



Oil-cake, nutritive matter contained 



in, 5, 6. 

 Oxen, experiment on six, 4. 



Panic-grass, glaucous, figure of the 

 seeds of, 20, fig. 6. 



Panic-grass, green, description of, 292. 



experiments on, 293. 



Panic-grass, slender-spiked, description 

 of, 294. 



experiments on, 295, 296. 



Panicum sanguinale, see Digitaria san- 

 guinalis. 



Panicum viride, 292, 295. 



Plants, table of the number of, in differ- 

 ent kinds of pasture land, on a foot 

 square of surface, 244. 



Plants, their effects in impoverishing 

 the soil, 387 — 390. 



Phleum nodosum, 199, 200. 



Boehmeri, 517. 



pratense, 19, 195 — 197. 



pratense, var. minus, 28, 197 — 



199. 



Phalaris arundinaceus, 28, 359. 



Canariensis, 19, 399. 



phleoides, 317. 



Potatoe, nutritive matter contained in 

 different varieties of, 409. 



composition of, 409, 410. 



Poa alpina, 301, 302. 



annua, 400. 



angustifolia, 184 — 186. 



aquatica, 354. 



glauca caesia, 192, 193. 



sub-cserulea, 145, 146. 



cenisia, 281, 282. 



compressa, 22, fig. 13, 306, 307. 



compressa, var. erecta, 307 — 309. 



decumbens, 378. See Triodia de- 



cumbens. 



. distans, 522. 



. fertilis, 186. 



. fluitans, see Glyceria fluitans. 



glauca, 194, 195. 



nemoralis, var, angustifolia, 182, 



183. 



nervata, 190, 192. 



• pratensis, 30, 142— 144. 



trivialis, 30, 146. 



Peat, active, analysis of, 122. 



Peat-moss, barren, analysis of, ibid. 



Pasture-land, natural, inquiries respect- 

 ing the frequent failures in attempts 

 to renew the valuable sward on, 127. 



grasses and other plants that com- 

 pose the produce of, 132. 



. cause of failures in attempts to 



renew the valuable sward on, 234. 



Pasture-land, unaccountable assertion 



respecting its renewal, 234. 

 the superiority of, over artificial 



pastures, 235. 

 the chief properties which give 



value to a grass for, 237. 

 selection of grasses adapted for, 



243. 

 manner of sowing the grass-seeds 



on, 247. 

 treatment of seedling grasses on, 



249. 

 the original valuable sward may 



be renewed on, in the space of four 



years, 235. 

 Pasture-land, rich, grasses and other 



plants which compose the sward of, 



ibid. 



nature of the soil of, 236. 



in Lincolnshire, ibid. 



in Devonshire, ibid. 



in the Vale of Aylesbury, ibid. 



Pastures, dry, rough, sandy, and down- 

 grasses, and other plants that are 



natural to, 256, 327 — 331. 

 less capable of improvement than 



peat-bogs, 331. 

 disadvantages that attend convert- 

 ing them with the plough only, 332. 

 Pastures, facts to prove the increase of 



value they are capable of receiving, 



333. 

 number of plants combined on one 



square foot of, 244. 

 may be much improved by con- 

 version to tillage, 332. 

 how improved permanently, 336, 



337. 



grasses best for improving, ibid. 



a judicious mode of treatment of, 



essential to continue its fertility, 250. 



Quaking-grass, common, description of 



the seeds of, 23, fig. 14. 



description of, 205. 



figure of, ibid. 



comparative value of, 206. 



nutritive matter contained in the 



spring leaves, 239. 



Ray-grass, see Rye-grass. 



Reed-grass, wood, description of the 



seeds of, 25, fig. 21. 

 Reed-grass, striped, see Canary-grass, 



striped-reed. 

 Reed-grass, sea, 371. 

 Root of grasses, varieties of, 11. 

 Rye-grass, annual bearded, description 



of the seeds of, 31, fig. Z5. 



