1. _Lotus corniculatus_—Common Bird’s-foot Trefoil—is common, especially in dry meadows, in which its herbage is duly appreciated by sheep and cattle, if one may judge from the pertinacity with which it is kept down. It is no bad adjunct to the rick. We are so convinced of its value as always to recommend its use in the laying down of light land for permanent pasture, and a little seed sown in old meadows after a dressing of rubbish—old mortar, town refuse, &c.—will tend greatly to the improvement of the herbage. 2. _Lotus tenuis_—Slender-leaved Bird’s-foot Trefoil—is, perhaps, only a variety of the former; it is, however, smaller in all its parts, and, though a denizen of stiff soils, occurs chiefly in a wild state on the margins of fields and on hedge-banks. It might be employed under the same circumstances as the _L. corniculatus_, especially in thin clay-beds on upland brashes; but it hardly possesses such good qualities. 3. _Lotus major_—Larger Bird’s-foot Trefoil—is much larger in all its parts than the other species. It occurs in moist situations, about bushes in wet land, in ditches, watercourses, and damp places generally. We have experimented upon the growth of this plant in artificial meadows, and from the size which it attains quite early in summer, and the quantity of wholesome keep it is capable of affording, we are disposed to think well of it as an occasional shifting crop, or it might be well combined with rye-grass in deep stiff soils. IV. MEDICAGO—_Medick, &c._ This genus is principally distinguished from _Trifolium_ by its twisted seed-pods, which in the _Medicago maculata_ (Spotted-leaved Medick) form quite a spiral coil, ornamented with a double fringe of stiff spines. This plant is now becoming general as an agrarian weed, having been greatly spread, owing to its intermixture with foreign seeds of different kinds. The agricultural species are:— _Medicago lupulina_—Yellow Sickle Medick.—“Hop trefoil” of the farmer, but not of the botanist, who gives this name to the _Trifolium procumbens_ (which see). From this latter the medick is easily distinguished by its heads of naked, blackened, incurved seed-vessels. As an agricultural plant it is of great value, especially in mixtures called “seeds.” It is a good adjunct to rye-grasses and common clovers, especially on light soils; but on good strong land which will bear a full crop of broad-leaved clover it would be mostly smothered out, and, if not, as we think it is properly held to be less nutritious than clover, its use is not recommended where first-rate clover crops can be grown. We have seen this trefoil grown with sainfoin to great advantage, as it yields a tolerable crop for the first two years, and then declines, just as the sainfoin has got possession of the soil.