TART

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Poisonous ? A late case is given in the American Journals of oil oftansy proving deleterious. See Beck, Med. Jtirispr.Tannin is the astringent principle of vegetables, and may be obtained inan impure form by digesting gall-nuts bruised, grape-seeds, oak-bark, or catechu, in a small quantity of cold distilled water, andevaporating to dryness. With isinglass or any other animal-jelly itforms leather.Tansy. See Tanacetum.

Tapioca is a peculiar form of starch prepared from the root of theJalropha Manihot, or Cassava, in the same way as starch is preparedfrom potatoes; but when it is still moist, it is rolled up in little balls.It is chemically the same with sago.Imitated by rolling up potato-starch in the same form.Used for making puddings and other nutritive articles for invalids in asimilar way to arrow-root, sago, &c.Tar. See Petroleum and Pix Liquida.Tab Liniment, in Farriery. Mix Oj each of rectified oil of tar and

common olive or sperm oil. (Pharm. Veterinary College.)Tar Water. A remedy celebrated by Bishop Berkeley, is prepared byinfusing tar with boiling water, which produce sa yellow empyreu-matic liquid.Internally it is stimulant and diaphoretic, and has been prescribed forphthisis, syphilis, and almost every disorder; but its day has longgone by, and perhaps deservedly.Externally it has been applied as a lotion for ringworm, tinea, &c, andmight be useful for pediculi, and in form of enema for ascarides.Taraxaci Radix. L. E. D. Dandelion. Taraxacum dens leonis. P.A common native plant, the root and leaves of which are bitter,mucilaginous, and somewhat acidulous.Incompatible with infusion and tincture of galls, and all astringent in-fusions, acetate of lead, nitrate of silver, oxymuriate of mercury, andsulphate of iron.Medicinally it is deobstruent, laxative, and diuretic: the latter propertyindeed has acquired it the vulgar name of Pissenlit in French, andPiss-a-bed in English. It has been long celebrated in abdominalobstruction, and disorders of the liver, particularly incipient scirrhus;tubercles of the lungs; and cutaneous disorders. It is usually given inform of extract or decoction; 3 j of the fresh root, sliced, to Oij of waterboiled down to Oj, strain, and add 5iij of supertartrate of potass.Dose gij or more twice a day. Or, Jj to ^iv of the expressed juice.See Extr. Tarax.Tartar Emetic. See Antimonium Tartarizatum. The mostsimple and economical mode of preparing this very useful article is

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