. Cyclopedia of farm crops : a popular survey of crops and crop-making methods in the United States and Canada. Agriculture -- Canada; Agriculture -- United States; Farm produce -- Canada; Farm produce -- United States. OIL-BEARING PLANTS OIL-BEARING PLANTS 501 TXigeriGuizotiaoleifera,Cass.). Compositm. Niger seed is derived from an erect annual plant reaching a height of about three feet. It has opposite, lanceolate-oblong, serrated leaves, numer- ous bright yellow flowers one to one and one-half inches in diameter, borne on elongated stems. The seed is formed by the inconspicuous di
. Cyclopedia of farm crops : a popular survey of crops and crop-making methods in the United States and Canada. Agriculture -- Canada; Agriculture -- United States; Farm produce -- Canada; Farm produce -- United States. OIL-BEARING PLANTS OIL-BEARING PLANTS 501 TXigeriGuizotiaoleifera,Cass.). Compositm. Niger seed is derived from an erect annual plant reaching a height of about three feet. It has opposite, lanceolate-oblong, serrated leaves, numer- ous bright yellow flowers one to one and one-half inches in diameter, borne on elongated stems. The seed is formed by the inconspicuous disc flowers. This plant, native of Abyssinia, is cultivated in Mysore, India, and to a lesser degree in Germany and the West Indies, principally for the pale yellow fatty oil expressed from the seed. The yield is about 35 to 40 per cent. The oil is used for illumination, and in making soap. The higher grades are also used for food purposes. It has a chracteristic pleasant aromatic odor. The seed is used also in bird-seed mixtures. It reaches the European mar- ket by way of London and Hamburg, but is not imported in the United States. Its experimental culture here has been I Fig. 726. Niger {Guizotia oleifera). Olive oil (Oka Europoea, Linn.). Oleacece. Olive-growing in the United States is practically confined to California and Arizona. The total crop in 1899, according to the United States Census, was about 5,000,000 pounds. The fruit is in part used for pickling and in part for the production of olive oil. The oil is obtained by expressing. The demand for olive oil is large and is in part supplied from foreign sources, notably Italy and France. In 1904, the total importation was about 1,700,000 gallons. This oil does not readily become rancid. The better grades of the oil are used as salad oil, the poorer for soap-making and in processes connected with the manufacture of tobacco. Peanut oil (Arachis hypogcea, Linn.). Leguminosce. Peanut-culture in the United Stat
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