Sugar-cane, though not so important as formerly, is still grown very extensively in several of the Southern states--Cuba, Porto Rico, and many semi-tropical countries. The chief distinction between cane-sugar and beet-sugar is that the crude cane-sugar, before it is refined, is a very wholesome and palatable product. The brown sugar of commerce is uncrystallized, or unrefined cane-sugar, and is fully as wholesome, and to most tastes more palatable than the granulated product. It is to be regretted that fashion has decreed we should use white sugar. [Sidenote: Refined sugar] Refined sugar, whether produced from beets or cane, is sometimes slightly contaminated with sulfurous acid and indigo, which are used for bleaching purposes, and if present in any quantity are very objectionable. [Sidenote: Maple-sugar] Maple-sugar, which is made by boiling or evaporating the sap of the sugar-maple, is a product decidedly superior in natural flavor to either beet or cane-sugar. Maple-sugar contains a small proportion of glucose and levulose, but its chief distinction from other sugars is a matter of flavor. The hickory tree contains flavors somewhat similar to the maple. A cheap substitute for maple-sugar has been manufactured by flavoring common sugar with the extract of hickory bark. The other forms of dry sugar obtainable in the market are milk-sugar and crystallized glucose. The chief use of milk-sugar as an article of diet is in humanizing cow's milk for infant feeding. The dry glucose, or, as it is sometimes called, grape-sugar, is not commonly seen in the market for the reason that it is difficult to crystallize, hence it is much cheaper to market glucose in the form of sirups. [Sidenote: The manufacture, composition and uses of glucose]