. Textbook of botany. Botany. SOME USEFUL PLANTS AND PLANT PRODUCTS 321 making soaps as well as in numerous other ways. Olive oil, obtained by pressing the ripe fruit of the ohve tree, is the most valuable for food purposes. It is largely adulterated with other oils of vegetable origin, such as cottonseed oil, obtained by grinding and pressing the kernels of cotton seeds, and peanut oil, pressed from peanuts. Peanut butter is made by grinding but not pressing the peanuts. The plant from whose seeds castor oil is made belongs to the spurge family. The oil is used in making soaps and lubricants,
. Textbook of botany. Botany. SOME USEFUL PLANTS AND PLANT PRODUCTS 321 making soaps as well as in numerous other ways. Olive oil, obtained by pressing the ripe fruit of the ohve tree, is the most valuable for food purposes. It is largely adulterated with other oils of vegetable origin, such as cottonseed oil, obtained by grinding and pressing the kernels of cotton seeds, and peanut oil, pressed from peanuts. Peanut butter is made by grinding but not pressing the peanuts. The plant from whose seeds castor oil is made belongs to the spurge family. The oil is used in making soaps and lubricants, in medicine, and in the manufacture of oilcloth, artificial leather, and cel- luloid. Treated with sulphuric acid, castor oil, as well as olive oil or cottonseed oil, forms what is known as "tur- key red oil," which is largely used in treating cotton fabrics so that they can be colored with certain coal tar dyes. Linseed oil, made from flax seed, has the prop- erty of drying quickly if exposed to the air, leaving a varnish-like residue; this property makes it valuable in paints and varnishes. Linseed oil enters into the manu- facture of linoleum, and, when thickened by long boiling, it forms the basis of printer's ink. Corn oil, made from the embryos of corn kernels, is used as a substitute for linseed oil in paints; it is also used in making soaps and lubricants. Corn oil, as well as linseed oil, can be vulcanized by heating with sulphur, so forming a substitute for rubber. An oil pressed from hemp seeds is also used, like linseed oil, in paints and in soap-making. The kernel of the. Fig. 178. — Peanut 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
Size: 1586px × 1576px
Photo credit: © The Book Worm / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1910, booksubjectbotany, bookyear1917
