U PLANTS USEFUL IN AGRICULTURE.

14. CVNOSURUS cristatus. Crested Doo's-taie-Grass. —A veryfine herbage a i I much relished by sheep, &c; it grows best in tineupland loam, whi-ieit is found to be a most excellent plant both forgrazing anil hay. The seeds are to be purchased sometimes at theseedshops. About twelve pounds will sow an acre.—See Observationson laying Land to Grass, in .he Appendix to this work.

. 15. CYNOSURUS cceruleus. Blue Doo's-tail-Grass.— Dr. Walkerstates this plant to lv > emarkably agreeable to cattle, and that it growsnearly three feet high in mountainous situations and very exposedplaces. As this grass does not grow wild in this part of the country,we have no opportunity of considering its merits. In our Botanic Gar-den it seldom exceeds the height of ten inches or a foot.

It is the earliest grass of all our British species, being often in bloomin February.

The above intelligent gentleman, who seems to have studied the Bri-tish Gramma to a considerable extent, says that the following kin Isgive considerable fond to sheep and cattle in such situations ; I shalltherefore mention their names, as being with us of little esteem andsimilar to the above.

Phh uin alpinum.

Eriophorum polystachion.

Festuca decumbens.

Carex fiavescens.

Carex gigantea, probably Pseudocy perns.

Carex irigona, probably vulpina,

Carex elata, probably atrata.

Carex nemorosa, probably pendula. And he is of opinion that theseeds may be sown to advantage. Be this as it may, the observationcan only apply to situations in the north of Britain, wheie he has seenthem wild ; in this part of the island we have a number of kinds muchbetter adapted to soil, climate, and fodder.

16. DACTYLIS glomeratus. Rough Cock's-foot-Grass. —Has a re-markably rough coarse foliage, and is of little account as a gra^s for thehay-stack; but from its early growth and great produce it is now foundto be a useful plant, and is the only grass at this time known that willfill up the dearth experienced by graziers from the time turnips areover until the meadows are lit for grazing. Every sheep-farm shonidbe provided with a due portion of this on the land; but no more shouldbe grown than is wanted for early feed, and what can be kept closelyeaten down all the season. If it is left to get up it forms large tufts,and renders the fields unsightly, and scarcely any animal will eat itwhen grown old or when dried in the form of hay. The seed is to bebought; two bushels per acie is sown usually alone.

17. FESTUCA elatior. Tali Fescue-Grass.— This in its wild statehas been considered as a productive and nutritive grass; it grows best