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EXTR

Extract op Quinces. The inspissated juice of the fruit, used to com-bine with opium and aromatic oils.

Extract of Riiatany Root is prepared either by means of water, oralcohol, from the root of the Krameria Iriandra, and is given indoses of 3j to 5j twice or thrice a day, in Jj of rose water, with afew drops of acetic acid. Tonic and astringent.

Extract of Senna is prepared from the leaves, but is, like manyother extracts which are prepared in the old empyreumatic manner,nearly inert.

Extract of Tea is brought from China, and has a slight flavour oftea. It is little used.

Extract of Wormwood. See Extractum Absinthii.

Extractum Acacia Catechu. See Catechu Extractum.

Extractum Aconiti. L. E. Extract of Aconite. Bruise in a stonemortar with a little water ftj of fresh Aconite leaves, press out thejuice, and evaporate to an extract.Medicinally the dose is gr. i, increased by slow gradations to gr. x, inform of pill. Borda gave it with effect in phthisis, but here it isonly prescribed, and with very doubtful effect, in chronic rheumatism.Barry's extract is acrid and escharotic.Poisonous. See Aconiti Folia.

Extractum Aloes Purificatum. L. D. Purified Extract of Aloes.Take Jbj of the extract of spiked aloes in powder, and a gallon ofboiling water. Digest for three days with a gentle heat, strain, andlet the dregs subside; decant off the clear liquor, and evaporate to aproper consistence.By this process the aloes is freed from its resinous matter, which is thesubstance supposed to cause griping; but it is consequently weakenedas a cathartic and emenagogue. Dose gr. x to gr. xv in form of pillor bolus.Enters into Pil. Aloes Comp. L. Pil. Aloes cum Myrrha. L. Pulv.Aloes Comp. L.

Extractum Anthemidis. L. E. D. P. Extract of ChamomileFlowers. Take ftj of dried chamomile flowers, one gallon of water ;boil down to four pints, strain while hot, and evaporate to an extract.By this process the volatile oil is driven off, and a simple bitterremains, the dose of which is gr. x to 3j in pills thrice a day. Barry'sextract is not deprived of its volatile oil, and is strongly fragrant.

Extractum Artemisia Absinthii. D. Extract of Wormwood.Prepared from a defecated decoction. The essential oil is driven offduring the process, which leaves a bitter inodorous mass, and is tonicin doses of gr. x to 9j.