Similar Plants.--Lythrum Salicaria; Scutellaria galericulata. 213. HELLEBORUS niger. BLACK HELLEBORE. Root. L.--The tase of Hellebore is acrid and bitter. Its acrimony, as Dr. Grew observes, is first felt on the tip of the tongue, and then spreads immediately to the middle, without being much perceived on the intermediate part: on chewing it for a few minutes, the tongue seems benumbed, and affected with a kind of paralytic stupor, as when burnt by eating any thing too hot. Our Hellebore is at present looked upon principally as an alterative, and in this light is frequently employed, in small doses, for attenuating viscid humours, promoting the uterine and urinary discharges, and opening inveterate obstructions of the remoter glands: it often proves a very powerful emmenagogue in plethoric habits, where steel is ineffectual or improper. An extract made from this root with water, is one of the mildest, and for the purposes of a cathartic the most effectual preparation of it: this operates sufficiently, without occasioning the irritation which the pure resin is accompanied with. A tincture drawn with proof-spirit contains the whole virtue of the Hellebore, and seems to be one of the best preparations of it: this tincture, and the extract, used to be kept in the shops. The College of Edinburgh used to make this root an ingredient in the purging cephalic tincture, and compound tincture of jalap; and its extract, in the purging deobstruent pills, gamboge pills, the laxative mercurial pills, and the compound cathartic extract.--Lewis's Mat. Med. Similar Plant.--Helleborus viridis. 214. HELLEBORUS foetidus. BEARSFOOT. Leaves. L.--The root is a strong cathartic; it destroys worms, and is recommended in different species of mania. It is commonly substituted for that of the Helleborus viridis, which is a more dangerous medicine. Hill's Herbal, p. 32. Great care ought to be used in the administering this plant: many instances of its dreadful effects are related. (See Poisonous Plants.) Similar Plant.--Helleborus viridis. 215. HORDEUM distichon. PEARL BARLEY. Seeds. L. E.--Barley, in its several states, is more cooling, less glutionous, and less nutritious than wheat or oats; among the ancients, decoctions of it were the principal aliment, and medicine, in acute diseases. The London College direct a decoction of pearl barley; and both the London and Edinburgh make common barley an ingredient in the pectoral decoction. 216. HUMULUS Lupulus. THE HOP.--The flowers and seed-vessels are used in gout and rheumatism, under the form of infusion in boiling-water. The powder formed into an ointment with lard, is said to ease the pain of open cancer. A pillow stuffed with hops is an old and successful mode of procuring sleep in the watchfulness of delirious fever.