INDEX. 



Fiorin-grass, see Agrostis stolonifera, 

 var. latifblia. 



Flea-bane, great, or ploughman's spike- 

 nard, a troublesome weed in sandy 

 pastures, how to destroy, 529. 



Floating sweet-grass, 349. 



reedy sweet-grass, 354 — 556. 



Flowers of grasses, varieties of, 14. 



parts of, 16. 



Food of cattle, the nutritive powers of, 

 can be only satisfactorily ascertained 

 by the aids of chemistry, 2. 



cannot be satisfactorily ascertain- 

 ed by the process of weighing and 

 feeding, ibid. 



Food of cattle, green, its laxative na- 

 ture corrected by the bitter extrac- 

 tive principle, 8. 



Food, the succulency of, and the differ- 

 ent vegetable principles it contains, 

 influences its fattening qualities, 9. 



Fox-tail, bulbous-rooted, knee-jointed, 

 description of, 501. 



experiments on, and comparative 



value of, ibid. 



Fox-tail, meadow, figure of the seeds 

 of, 20, fig. 7. 



description of, 159. 



experiments on, 1 40. 



figure of, 159. 



comparative value of, 141, 142. 



nutritive matter afforded by the 



leaves of, in spring, 240. 



Fox-tail grass, knee-jointed, description 

 of, 555. 



experiments on, and value of, 



354. 



Fox-tail, slender, description of the 



seeds of, 29, fig. 28. 



description of, 283. 



experiments on, 284. 



figure of, 285, 



Fox-tail, reed-like, description of, 251. 

 experiments on, and comparative 



value of, 252. 

 Fox-tail, Taunton's, description of, ibid. 

 experiments on, and comparative 



value of, 255, 254. 



Glyceria fluitans, 549. 



aquatica, 554. See Poa aquatica. 



Grasses, experiments on, how con- 

 ducted, 1. 



selection of, for permanent pas- 

 ture on soils of the best quality, 245. 



out of 215 species, two only have 



been cultivated to any extent, Pref.xvi. 

 the knowledge of, yet in its in- 

 fancy, ibid. 



Grasses, the length of time required to 

 ascertain the relative value of the 

 different species of, discouraging to 

 farmers, lo. 



a hope of promoting the know- 

 ledge of the different s))ecies and 

 varieties, induced the Duke of Bed- 

 ford to institute a series of experi- 

 ments on, Prefi'.ce, xviii. 



chemical process, to ascertain the 



comparative nutritive powers of, 2. 



vegetable principles that consti- 

 tute the nutritive matter of, 5. 



every distinct species of, differs 



from all others, in one or more of 

 the properties which alone render 

 them of value to the farmer, lo. 



botanical terms used in describing 



the structure of, ibid. 



comparative advantages and dis- 

 advantages of depasturing or mowinf^ 

 the first year on dry sandy soils, 558, 

 559. 



figures and descriptions of the 



seeds of, 17 — 52. 



that naturally grow in moist soils 



and irrigated meadows, 540. 



that peculiar structure which dis- 

 tinguishes them from all other plants, 

 40. 



general catalogue of, 45. 



selections of for early flowering, 



258. 



that afford the least nutritive mat- 

 ter from the first growth in spring, 

 what, 240. 



that afford the greatest quantity 



of nutritive matter, what, ibid, 



the composition of the nutritive 



matter of the leaves of, 241, 



not two species afford nutritive 



matter of the like composition, 242. 



nothing retards the after-growth 



so much as close cropping the first 

 shoots of, early in the spring, 558. 



the different species of, natural to 



dry sandy pastures, 256. 



the attempt to cultivate them on 



soils not naturally adapted for, a 

 vain labour, 275. 



the kinds best adapted for im- 

 proving dry sandy pastures, 557. 



selection of, for dry sandy soils, 



336. 

 Grazing, the leaves of grasses the most 



valuable part of the plant for, 238. 

 statement of the nutritive powers 



of the spring leaves of the grasses 



adapted for, 240, 



