The form we have figured is more particularly agrarian where its creeping underground stem forms a kind of mischievous couch, and this, united with a tangled growth derived from shoots rooting above the ground, renders this one of the most pernicious weeds, especially in thin soils, on calcareous, brashy, or stony soils. [Illustration: _Fig. 27._ Woolly Soft Grass.] Woolly Soft Grass (_Holcus lanatus_, fig. 27), though exceedingly pretty from its contrast in colour and form with its congeners, is still so worthless in point of feeding properties as to be little, if any, better than a weed. It is too abundant in some moist meadows; and where it forms a very large portion of the herbage, it speaks of poverty as well as wet, and would lead to the inference that a little draining, less frequent haymaking, and liberal doses of manure, would have a most decidedly beneficial effect. [Illustration: _Fig. 28._ Quaking Grasses.] Quaking Grasses (_Briza media_, fig. 28, _B. minor_, _a_, and _B. maxima_, _b_), though certainly amongst our pretty species, are all useless to the farmer. The common species is well known in all wet or poor clay meadows, and where very abundant we should usually make our calculations for something less than a ton of hay to the acre, and this would generally be late, and offer little _aftermath_. Like the preceding, its indications are want of draining, manure, and depasturing. If after the drains begin to act, sheep be folded upon a quaking-grass meadow, and fed with turnips, hay, pease, or cake, it will soon be eradicated. _a_, the smaller species, is an annual, and is only noticed here by way of distinction: its smaller and broader bunches of whitish, not purple, flowers, and rectilinear branches, will distinguish it from the common form. It is comparatively rare; but we have had some fine specimens communicated by H. C. Watson, Esq., from Thames Ditton. _b_ is a garden specimen, remarkable for its larger flower bunches. The Hair Grass (_Aira cæspitosa_, fig. 29) is commonly called hassock, or tussac grass, or bull-pates—names which its massive bunches of root-leaves clearly indicate the meaning of. Its leaves are so rough, with serrated edges, that cattle mostly refuse it, unless when very young. This grass is a never-failing indicator of wet,—so much so, that if a meadow be drained in which it abounds, the action of the drains is clearly indicated by its more or less gradual dying out. The quickest way, then, to subdue this large, coarse weed-grass is to drain, and then fold sheep upon the drying meadow: these animals tread the tussac grass into manure, which goes to feed the better species. By this means, not only this, but other rough or “sour” grasses are more quickly and more certainly removed than by spudding them out; and this leads us to remark, in concluding this chapter, that in the meadow there will usually be found growing together two sets of grasses, which may be designated as follows:—