Neither of these root crops require any considerable expenditure in seed, and on this account, if on no other, they are preferable to crops of the potato and of the Jerusalem artichoke, which in the article of seed are perhaps the most expensive of any whatever. We however consider crops even of these roots more profitable than those of grain, and particularly the potato, when judiciously cultivated in climates most suitable for its growth. For the various uses of this root for culinary purposes it stands indeed without a rival. In point of profit we would also give to the carrot, the parsnip, and the onion, a preference to crops of grain; but the soils well adapted for them is more limited, and their culture is more expensive; and although they should form a part of the products of the farm we cannot recommend them as being in all instances proper for a judicious rotation of crops. The common turnip, and the cabbage, are also entitled to attention. The pumpkin is as nutritious as the same weight of any root or vegetable whatever, and its culture is cheap; but whether its product, in weight, can be made to compete with that of roots, is a matter of which we are not informed. If 15 tons to the acre could be usually obtained of this species of gourd, we should be induced to pronounce the crop, in point of profit and use, unrivalled as a preparative for a crop of winter grain. The crop would be found among those which are least expensive in seed, in culture and in gathering; none would occasion less exhaustion of soil, nor require less for manure, as a little gypsum to the hills, or drills, will be found to have a powerful effect on its growth, but of its more complete cultivation we shall presently speak. In Pennsylvania, and farther to the south, a successful mode of culture has been put in practice of growing Indian corn and potatoes in alternate rows or drills, and in this way about a sixth more of product in the aggregate, is obtained from the ground, than if these two sorts of crops were cultivated separately. Such is found to be the fact, and the reason for it seems to be that each crop has, in this way, more space given for the extension of its roots in search of its favourite food, and each has the like room above ground for deriving from the air the nutriment that is most suitable. Corn, in particular, it is well known, is liable to much injury, if planted too closely. There is, indeed, a variety of cases where this mingling of growths is found very advantageous, and whenever we shall venture to recommend the practice, it will be founded on a conviction of its utility. There are also some instances, even in this northern latitude, in which two crops may be had in a season from the same ground, and any case where it may be advisable shall be duly noted.