disease incident to trees, proceeding chiefly from the nature of the soil. It makes the bark rot and fall. If the canker be in a bough, cut it off; in a large bough, at some distance from the item; in a small one, close to it: but for over hot strong ground, the ground is to be cooled about the roots with pond mud and cow dung.

Canker, among farriers. See Farriery Index.

Canna, Indian reed. See Botany Index.

Cannabis, Hemp. See Botany Index.

From the leaves of hemp pounded and boiled in water, the natives of the East Indies prepare an intoxicating liquor of which they are very fond. The plant, when fresh, has a rank narcotic smell; the water in which the stalks are soaked, in order to separate the tough rind for mechanic uses, is said to be violently poisonous, and to produce its effects almost as soon as drunk. The seeds also have some smell of the herb, and their taste is unctuous and sweetish: they are recommended, boiled in milk, or triturated with water into an emulsion, against coughs, heat of urine, and the like. They are also said to be useful in incontinence of urine, and for restraining venereal appetites; but experience does not warrant their having any virtues of that kind.