. Textbook of botany. Botany. SOME USEFUL PLANTS AND PLANT PRODUCTS 315 greater part of the starch thus prepared is from potatoes and com; but it is also obtained from other cereals (especially rice), from beans, and from the arrowroot plant. Tapioca is the starch extracted from the roots of the cassava, and sago is the starch obtained from the pith of certain palms. Dex- trin, a gum-like substance, is made by treating starch with hot dilute acids. It is used for giving a smooth finish to paper, for stiffening cotton cloth, in making mucilage, and for other purposes. 334. Sugar-producing Plant
. Textbook of botany. Botany. SOME USEFUL PLANTS AND PLANT PRODUCTS 315 greater part of the starch thus prepared is from potatoes and com; but it is also obtained from other cereals (especially rice), from beans, and from the arrowroot plant. Tapioca is the starch extracted from the roots of the cassava, and sago is the starch obtained from the pith of certain palms. Dex- trin, a gum-like substance, is made by treating starch with hot dilute acids. It is used for giving a smooth finish to paper, for stiffening cotton cloth, in making mucilage, and for other purposes. 334. Sugar-producing Plants. — By far the greater part of the sugar in the market is obtained from the stalk of the. Fig. 173. — Harvesting sugar cane in Louisiana. sugar cane and from the root of the beet. The sugar from both sources is alike, and in either case it is called cane sugar. The juice of the beet or sugar cane is pressed out and evapo- rated ; the sugar which then appears in the form of crystals is separated from the remaining liquid (the molasses), and after being refined and recrystallized is sold in the form of granulated sugar, pulverized sugar, or loaf sugar. Sugar is also made on a comparatively small scale from the juice of some palm trees, from that of the sorghum (although this is. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Allen, Charles E. (Charles Elmer), b. 1872; Gilbert, Edward Martinius, joint author. Boston, New York [etc. ] D. C. Heath & co
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