We would not declare against foreign manures, but insist that the necessary ingredients are found, or may be manufactured near at hand. The philosophy of deep plowing and thorough pulverization is obvious. A fine soil will retain and appropriate moisture in an eminent degree, on the principle of capillary attraction, or as a sponge or a piece of loaf sugar will take up water. There is also room for excess of water to sink away from the surface, and return again when needed. It also affords room for the roots of plants. Such a soil also receives moisture from the atmosphere. The atmosphere also contains much water, and more in the heat of summer than at any other time. The air also, with a constant pressure of fifteen pounds to the square inch, enters to a considerable depth into the soil, and the deeper it is stirred, and the more thoroughly it is pulverized, the more it will enter. In coming in contact with the cool moisture below, it is condensed and waters the soil, on the principle that a pitcher of cold water in a warm room has large drops of water on the outside; that water is a mere condensation of moisture in the atmosphere. The cool subsoil acts in the same way upon the atmosphere at night. A deeply disintegrated soil, also, seldom washes by rain. Shallow-plowed and coarse land sends off the water after a slight rain, while deep-plowed and thoroughly pulverized land retains it. The philosophy of manures involves the same principles. All the fertilizers act upon soils in such a manner as to render them fine, and open an immense surface to the action of the atmosphere, and form large reservoirs for moisture through their innumerable fine pores. Draining is to carry off an excess of water that would stand on an unfavorable subsoil. That water, on undrained land, causes two evils; it stagnates and renders plants unhealthy, and it is too cool, rendering land what we call cold. Thus, the deeper you plow land, and the finer you make it, the warmer it will be, and the more perfectly it will control moisture. Mixing soils by subsoiling, trenching, and deep plowing, and by carting on foreign substances, is wholly on this principle. Sand that drifts about with the wind is too light to retain moisture, and needs clay carted on. By this means the poorest white sand has often been converted into the most productive soil. Definite rules for this mixture of soils can not be safely given. The rules must differ in different localities and circumstances; it must, therefore, be determined by experiment. Analyzing soils is sometimes of use, but usually has too much importance attached. We do not advise farmers to study it. Let them try applications and mixtures, at first on a small scale: they will soon learn what is best on their farms, and may then proceed without loss. Some lands are of such a character that the carting on, and suitably mixing, the substances in which they are deficient, may cost as much as