370

QUIN

■ Querc. robur. D. E. Querc. sessiflora. P. The medical propertiesof oak bark depend on its astringency, and that again on its tannin.The inner bark of the small branches is the strongest, the middlebark next, and the outer bark is almost useless.Internally it may be given in form of decoction, of infusion, or powder,in the dose of Dj to 5Jss, as a tonic and astringent in leucorrhcea,monorrhagia, &c, and also in intcrmittents.Externally, as a styptic, astringent, and antiseptic, when sprinkled inform of powder over gangrenous and ichorous ulcers. Inhaled inthe form of impalpable powder it has been found useful in phthisis.Enters into Decoct. Quercus. L.Quercus Infectoria. P. Quercus Cerris. E. The Gall Oak.Quercus Marina. Oak-leaved sea weed, used in form of cataplasm

for strumous affections, &e.Quercus Racemosa. P. Grape Oak. Similar to the preceding.Quehcus Suiser. The Cork Tree. Burnt cork, when powdered andmixed with fixed oil, is sometimes prescribed as an astringent inhemorrhage.Quicklime. See Calx.

Quicksilver, or Mercury. See Hydrargyrum.Quicksilver Ointment (Strong), in Farriery. Take ftj of quicksilver,5Jss of balsam of sulphur (Oleum Sulphuretum), rub them welltogether, and add ftj of lard. (Pharm. Vet. Coll.)Quicksilver Ointment {Nitrate), in Farriery. Take §iij of quick-silver, ^vj nitric acid, dissolve, and then take jviij of lard, Jxij ofolive oil; melt together, add the acid, &c, and stir till cold. (Pharm.Veterinary Coll.)Quince. See Cydonije Sem.Quince Jelly. See Jelly.Quince Marmalade. See Marmalade.Quinate op Lime. See Kinic Acid.Quinic Acid. See Kinic Acid.

Quinia, Quina, or Quinine. Nerv. A vegetable alkaline principle,and the most valuable and important perhaps of all the new medi-cines. To procure it, boil a portion of red Peruvian bark, Cinchonaoblongifolia, in alcohol, till it loses its bitter taste; evaporate todryness; dissolve this extract in boiling water, strongly acidulatedwith hydrochloric acid; add magnesia in excess, which after a fewminutes, boiling will fix the red matter, and clear the liquor; when• cold, filter and wash the precipitate with cold water; dry it on a stove,digest in boiling alcohol till all the bitter principle is separated; mixthe alcoholic liquors, and the quinine will separate as it cools.Adulterated, I have no doubt, with some cheaper materials, though I