218. HYSSOPUS officinalis. HYSSOP. The Herb. L. E. D.—The leaves of Hyssop have an aromatic smell, and a warm pungent taste. Besides the general virtues of aromatics, they are particularly recommeded in humoral asthmas, coughs, and other disorders of the breast and lungs; and said to notably promote expectoration.
219. INULA Helenium. ELECAMPANE. Root. D.—Elecampane root possesses the general virtues of alexipharmics: it is principally recommended for promoting expectoration in humoural asthmas and coughs; in which intention, it used to be employed in the Edinburgh Pharmacopoeia: liberally taken, it is said to excite urine, and loosen the belly. In some parts of Germany, large quantities of this root are candied, and used as a stomachic, for strengthening the tone of the viscera in general, and for attenuating tenacious juices. Spiritous liquors extract its virtues in greater perfection than watery ones: the former scarce elevate any thing in distillation: with the latter, an essential oil arises, which concretes into white flakes; this possesses at first the flavour of the elecampane, but is very apt to lose it in keeping.
220. JUNIPERUS Sabina. SAVINE. The Tops. L. E. D.—Savine is a warm irritating aperient medicine, capable of promoting all the glandular secretions. The distilled oil is one of the most powerful emmenagogues; and is found of good service in obstructions of the uterus, or other viscra, proceeding from a laxity and weakness of the vessels, or a cold sluggish indisposition of the juices.
Similar Plants.—Juniperus oxycedrus; J. Phoenicea. These should be particularly distinguished, as Savine is attended with danger when taken immoderately.
221. JUNIPERUS communis. JUNIPER. Berries. L. E. D.—Juniper berries have a strong, not disagreeable smell; and a warm, pungent sweet taste, which, if they are long chewed, or previously well bruised, is followed by a bitterish one. The pungency seems to reside in the bark; the sweet in the juice; the aromatic flavour in oily vesicles, spread through the substance of the pulp, and distinguishable even by the eye; and the bitter in the seeds: the fresh berries yield, on expression, a rich, sweet, honey-like, aromatic juice; if previously pounded so as to break the seeds, the juice proves tart and bitter.
222. LACTUCA virosa. WILD LETTUCE. Leaves. E.—Dr. Collin at Vienna first brought the Lactuca virosa into medical repute; and its character has lately induced the College of Physicians at Edinburgh to insert it in the Catalogue of the Materia Medica. More than twenty-four cases of dropsy are said by Collin to have been successfully treated, by employing an extract prepared from the expressed juice of this plant, which is stated not only to be powerfully diuretic, but, by attenuating the viscid humours, to promote all the secretions, and to remove visceral obstructions. In the more simple cases proceeding from debility, the extract in doses of eighteen to thirty grains a-day, proved sufficient to accomplish a cure; but when the disease was inveterate, and accompanied with visceral obstructions, the quantity of extract was increased to three drams; nor did larger doses, though they excited nausea, ever produce any other bad effect; and the patients continued so strong under the use of this remedy, that it was seldom necessary to employ any tonic medicines.—Woodville's Med. Bot. p. 76.
Similar Plants.—Sonchus arvensis; Lactuca Scariola.
223. LAVANDULA Spica. LAVENDER. Flowers. L. D.—Lavender has been an officinal plant for a considerable time, though we have no certain accounts of it given by the ancients. Its medical virtue resides in the essential oil, which is supposed to be a gentle corroborant and stimulant of the aromatic kind; and is recommended in nervous debilities, and various affections proceeding from a want of energy in the animal functions.—Woodville's Med. Bot. p. 323.
224. LAURUS nobilis. BAY-TREE. Leaves and Berries. L.—In distillation with water, the leaves of bay yield a small quantity of very fragrant essential oil; with rectified spirit, they afford a moderately warm pungent extract. The berries yield a larger quantity of essential oil: they discover likewise a degree of unctuosity in the mouth; give out to the press an almost insipid fluid oil; and on being boiled in water, a thicker butyraceous one of a yellowish-green colour, impregnated with the flavour of the berry. An infusion of the leaves is sometimes drunk as tea; and the essential oil of the berries may be given from one to five or six drops on sugar, or dissolved by means of mucilages, or in spirit of wine.—Woodville's Med Bot. p. 680, 681.
225. LAURUS Sassafras. SASSAFRAS-TREE. Bark. L. E. D.—Its medical character was formerly held in great estimation; and its sensible qualities, which are stronger than any of the woods, may have probably contributed to establish the opinion so generally entertained of its utility in many inveterate diseases: for, soon after its introduction into Europe, it was sold at a very high price, and its virtues were extolled in publications professedly written on the subject. It is now, however, thought to be of very little importance, and seldom employed but in conjunction with other medicines of a more powerful nature.