With respect to the mixtures of grass-seeds most profitable for the dairy farmer, no universal rule can be given, as they depend very much upon the nature of the soil and the locality. The most important point to be observed, and one in which we, as a body, are perhaps most deficient, is to use a large number of species, with smaller quantities of each than those most commonly used. This is nature’s rule; for, in examining the turf of a rich old pasture, we shall find a large number of different species growing together, while, if we examine the turf of a field sown with only one or two different species, we find a far less number of plants to the square foot, even after the sod is fairly set. No improvement in grass culture is more important, it seems to me. I have suggested, in another place, a large number of mixtures adapted to the different varieties of soil and circumstance, together with the reasons for the mixture in many instances. (See _A Practical Treatise on Grasses and Forage Plants_, comprising their Natural History, Comparative Nutritive Value, Methods of Cultivating, Cutting, and Curing, and the Management of Grass Lands, &c. 236 pp. 8vo., with illustrations.) As an instance of what I should consider an improvement on our ordinary mixtures for _permanent pastures_, I would suggest the following as likely to give satisfactory results, dependent, of course, to a considerable extent, on the nature and preparation of the soil: Meadow Foxtail, flowering in May and June, 2 pounds Orchard Grass, flowering in May and June, 6 “ Sweet-scented Vernal, flowering in April and May, 1 “ Meadow Fescue, flowering in May and June, 2 “ Redtop, flowering in June and July, 2 “ June Grass, flowering in May and June, 4 “ Italian Rye Grass, flowering in June, 4 “ Perennial Rye Grass, flowering in June, 6 “ Timothy, flowering in June and July, 3 “ Rough-stalked Meadow Grass, flowering in June and July, 2 “ Perennial Clover, flowering in June, 3 “ White Clover, flowering in May to September, 5-40 “ For mowing-lands the mixture would, of course, be somewhat changed. The meadow foxtail and sweet-scented vernal would be left out entirely, and some six or eight pounds added to the Timothy and red clover. The proper time to lay down lands to grass in the latitude of New England is August or September, and no grain crop should be sown with the seed.