represents the percentage of insoluble fatty acid + the nunsaponifiable constituents.

is obtained by pressing or extraction from hempseed, and is of faint green colour, nondrying in character, and turns brownishyellow upon standing. It has a sp. gr. of 0925 to 0928, a saponification value of about 1925, and an iodine value of 148. It is soluble in ether, benzol, and carbon disulphide, and is used for illuminating purposes and in making soft soaps, paints, and varnishes.

The unit of power being equal to 33,000 footpounds of work per minute. 1 34 horsepower = 1 kilowatt, ar.d 1 horsepower = 1014 metric horsepower.

as obtained from the root of the black variety contains a nitrogenous, crystalline substance soluble in alcohol, named helleborine. Pharmaceutical preparations are made from the roots of the white and green hellebores.

A British white glass for making miners

The fruit of this plant contains a yellow, bitter powder named lupulin, of mixed constitution including a resin, a waxy body, and extractive matters, and when distilled with water it yields valerianic acid and a volatile oil. The real bitter principle is said to form about from 8 to 12 per cent, of the lupulin powder of which the hop fruit contains about 10 per cent., and includes an acid named humulon.

distilled from the herb Munarda punctata, is yellowishred, soluble in alcohol and ether, having a sp. gr. of about 092 to 094, and used in compounding liniments.

is a colourless gas of peculiar odour like that of bitter almonds, and isintensely poisonous. It is prepared by the action of dilute sulphuric acid upon potassium cyanide, or in a pure state by passing hydrogen sulphide over dry mercuric cyanide

Salts composed of halogen elements with metals, such as sodium chloride and potassium iodide.

If potassium be heated in hydrogen sulphide gas potassium hydrosulphide is formed, hydrogen being at the same time set free H2S + K = KHS + H, and the same substance is produced in solution, by passing a current of hydrogen sulphide into a solution of potassium sulphide Hydrosulphides of the alkalies and aikaline earths are also termed sulphydrates. Sodium hydrosulphide can be obtained in the form of colourless needles, soluble in water, by treatuig calcium sulphide with sodium bisulphate.