"The method of cultivating the Beet root, here recommended, is the same as that used in the cultivation of turnips, in Northumberland, and other parts of the North of England with this exception, that the rows there are 27 inches apart.--There may be reasons in the North for still preserving that space; but in Essex the effect of it, in the cultivation of the Beet root, would be, that instead of 48 tons per acre, 43 tons only would be obtained. Experience has proved, that the roots do not get to a larger size in rows three feet apart, than they do in rows two feet apart. It may therefore fairly be presumed, that they would not be larger, in rows twenty-seven inches apart; and if not larger, the weight of the crop, per acre, must be less, because the plants decrease in number as the rows increase in space." To the preceding account of cultivating the Mangel Wurtzel, I will subjoin a few REMARKS. In this mode it is intended that every two feet of ground should bear one plant: and as an acre contains 43,560 square feet, there will be half of that number of plants on an acre, and the roots must weigh nearly five pounds each, on an average, to yield forty-eight tons. The land must indeed be strong to produce so heavy a crop. If our lands, enriched and prepared in the best manner conveniently in our power, can be made to yield half as much, we shall have reason to be satisfied: especially as the Mangel Wurtzel, quantity for quantity, contains more than twice as much nutritive matter as the Ruta Baga, and even 50 per cent. more than Carrots; according to the experiments (by analysis) of a celebrated English Chymist, Sir Humphrey Davy, which he stated to the British Board of Agriculture. These experiments were made with the red and white Beets; but it is presumed that the Mangel Wurtzel produces as much nutriment as any other Beet. Instead of 6 it may be advisable to apply at least 12 cubit yards (that is 6 such cart loads as were before-mentioned) of manure to an acre; and to distribute the same in deep furrows 4 feet apart. This would give four square feet of ground to each plant, the plants being at a foot distance one from another in the rows, four feet apart, would admit the use of the common horse plough in their cultivation. Carrots and the Mangel Wurtzel possess one eminent advantage; that they are not, to my knowledge, annoyed by insects at any period of their growth. Whereas the Ruta Baga and other turnips, while in the seed leaf, are injured (in England whole fields are often destroyed) by a small black fly: and the Ruta Baga (like cabbages) when far advanced in growth, is sometimes infested, and in dry seasons half ruined, by plant lice; as was my small crop in 1818.