Glycine Hispida
Soya bean plants under cultivation at Arlington, Va.

By blowing air through linseed oil that has been heated to approximately 200 degrees Fahrenheit, either with or without drier, heavy bodied oils are obtained, which find special application in varnishes and technical paints. As the viscosity of these oils increase, the iodine values decrease, and a slight rise in saponification value and specific gravity is observed. The following analyses of various types of linseed oil were recently made by the writer:

Pure Raw
Linseed Oil		Boiled
L. O.
(Linoleate)		Boiled
L. O.
(Resinate)		Blown
L. O.		Litho.
L. O.		Old
Treated
Oil
ColorAmberDarkReddishPaleDarkAmber
ClearBrownBrown BrownClear
Sp. Gr. at 15° C..933
Average		.941.930.968.970.943
Iodine No.180172176133102172
Saponification No.191187186189199197
Free Fatty Acid3.22.72.22.82.76.9
Unsaponifiable1.4————1.8
Maumene111————96
Moisture.2%————none

Soya Bean Oil. The [soya plant] which is extensively cultivated in Asia produces a [seed] bearing up to 22% and over of a golden colored oil having a peculiar leguminous odor. The oil, which probably consists of the glycerides of oleic, linoleic, and palmitic acids, is secured by crushing, steaming and pressing the seed. There are several varieties of the plant, and they are said to be the best annual legume for forage, the straw and fruit being rich in nitrogen and very fattening as a cattle food. Soya may be grown in nearly any country and is a great carrier of nitrogen to land deficient in this element. Although the oil has been used abroad for many years for soap-making purposes, its use as a drying oil is comparatively recent; being introduced into the paint industry of the United States during the year 1909, when linseed oil started on its phenomenal rise in price.

Glycine Hispida
Mammoth soya bean plant

Glycine Hispida
Soya bean plant, showing nitrogen gathering tubercles on roots