Linseed oil is used in paints, varnishes, printer’s ink, oilcloth and linoleum. Linseed oil-cake is a valuable cattle food. Flax seeds find limited use in medicine.
Flax yarns are used in making rope, twine, bagging and coarse, unbleached fabrics. Linen yarns are made into products of the better grade, including fine linens, cambrics, laces, etc.
Linen is bleached by exposure to the sun and by treatment with a dilute solution of chloride of lime. Linen rags are the stock for the best qualities of paper.
The United States imports flax fiber mainly from Europe, as well as large quantities of linens, laces, etc. Some flax seeds are imported and large amounts of linseed oil-cake are sent to Europe.
Guava (Psidium Guayava), small trees of tropical America belonging to the Myrtle family. The fruits vary very much in size, shape and color, the most valued being the white guava, with pear-shaped, yellow or whitish fruits the size of a hen’s egg. The inferior red guava which is more apple-shaped, is also used in preparing guava-jelly and guava-cheese, which preserves, owing to the perishable character of the fruit, are the only forms in which the fruit is imported. The tree has been naturalized in the East, and is commonly grown from Mexico to Peru at date of Spanish discovery. Since widely diffused in East and West India Islands, India, and China. Recently established in Florida and California.
Hemp (Cannabis sativa) is cultivated in many countries. It is about three feet in height, has finger-like leaves and the fruit has the form of a little nut. The home of the hemp is the East Indies. The stalks are dried in the sun, then steeped in water or upon wet (moist) meadows, and again exposed to the sun, when the woody parts are stripped off. The remaining fibers are manufactured into cables, ropes, sail-cloth, linen and paper.
Other hemps of different botanical origin and having quite different qualities are called by such names as manila hemp, sisal hemp, tampico hemp, Mauritius hemp, sunn hemp, bowstring hemp, etc. Strictly speaking, none of these is true hemp.
It is cultivated in Russia, the warm countries of Asia, the shores of the Mediterranean, Kentucky, Missouri, Illinois and California. Russia produces more hemp fiber than all the rest of the world. Russia and Italy are the largest exporters.
As with other cordage fibers of this character, the long, combed fibers are called line and the short strands, tow. The commercial fiber is longer, coarser and less strong than flax. It can not be bleached perfectly white, although used in so-called coarse linens. Russian, Italian and Kentucky, as applied to hemp, denote the country of origin. Italian hemp is the finest, Kentucky the strongest.
Hemp oil is pressed from the seeds. It is used in paints, varnishes and soap. The oil-cake is a cattle food.