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 The business of manufacturing sugar is everywhere carried on in connection with the planting of the cane. The shortness of the season during which the cane can be used is the reason assigned for this: the proprietors would not be willing to trust to custom-mills to manufacture their produce with the necessary rapidity. If cane should be cultivated in connection with other crops—that is, on small farms, instead of great "sugar only" plantations—neighbourhood custom-mills would probably be employed. The profit of a sugar-plantation is now large, much in proportion to its size (if it be proportionately stocked); because only a very large supply of cane will warrant the proprietor in providing the most economical manufacturing apparatus. In 1849 there were 1,474 sugar estates in Louisiana, producing 236,547 hhds. of sugar; but it is thought that half of this quantity was produced on less than 200 estates—that is, that one-eighth of the plantations produced one-half the sugar. The sugar-works on some of the large estates cost over $100,000, and many of them manufacture over 1,000,000 lbs. per annum. The profits of these, under our present tariff, in a favourable season, are immense.

The apparatus used upon the better class of plantations is very admirable, and improvements are yearly being made, which indicate high scientific acquirements, and much mechanical ingenuity on the part of the inventors. The whole process of sugar manufacturing, although chemical analysis proves that a large amount of saccharine is still wasted, has been within a few years greatly improved, principally by reason of the experiments and discoveries of the French chemists, whose labours have been directed by the purpose to lessen the cost of beet-sugar. Apparatus for various processes in the manufacture, which they have invented or recommended, has been improved, and brought into practical