Lupulus 4786 dislike; from its bitterness,) humulus convolvulus perennis, humulus lupulus Lin. Sp. Pl. 1457. The hop. This plant hath hollow stalks, and broad serrated leaves, cut into three or five sharp pointed sections. On the tops grow loose scaly heads, among which are small flat seeds. It is perennial, grows wild in hedges, and the bottom of hills, in various parts of Europe; but those used are cultivated in plantations. In August and September the scaly heads are dried in kilns with a gentle fire.

The scaly heads have a bitter, warm, aromatic taste, yielding their virtue to proof and rectified spirit, by maceration without heat; and to water, by warm infusion. The extract obtained from the spirituous tincture is an elegant bitter; but hops are only at present used for preserving malt liquor. Like many other bitters, the cold infusion is more grateful than that made with boiling water; but the quantity must be larger. Hops have been suspected of a narcotic power, and there is said to be an act of parliament prohibiting their use in beer. On the other hand, a pillow of hops has been said to procure sleep. Hops have been lately, like other narcotic bitters, recommended in gout. The Spaniards boil a pound of hop roots in a gallon of water to six pints, and drink half a pint of the decoction, whilst in bed, every morning, as a remedy for the lues venerea. See Lewis's Materia Medica.