General therapeutics and materia medica (volume 1): adapted for a medical text book . ; and, like all thebitters, has been given in the apyrexia of intermittents ; but its powersare not such as to entitle it to be classed amongst the antiperiodictonics. It is generally given in infusion. (Sabbatice gj ; Aq. Dose, ) Should it be desired to prescribe it in powder, thedose may be from 3ss to 5j- 10. COPTIS.—GOLD-THREAD. Gold-thread is the root of Cophs trifolia; Sex. Syst. PolyandriaFig. 130. Polygynia; Nat. Ord. Ranunculaceae; a smallindigenous evergreen, re-sembling the stra
General therapeutics and materia medica (volume 1): adapted for a medical text book . ; and, like all thebitters, has been given in the apyrexia of intermittents ; but its powersare not such as to entitle it to be classed amongst the antiperiodictonics. It is generally given in infusion. (Sabbatice gj ; Aq. Dose, ) Should it be desired to prescribe it in powder, thedose may be from 3ss to 5j- 10. COPTIS.—GOLD-THREAD. Gold-thread is the root of Cophs trifolia; Sex. Syst. PolyandriaFig. 130. Polygynia; Nat. Ord. Ranunculaceae; a smallindigenous evergreen, re-sembling the strawberry,which inhabits the north-ern parts of America;and is found, likewise, inAsia, Greenland, and Ice-land ; flowering in whole of the plant isbitter ; but the root mostso. It is, therefore, theofficinal portion ; and isadmitted into the second-ary list of the Pharmaco-poeia of the United seen in the shops,^^^ gold-thread is in loosefc^jK^ masses, formed by longfiliform, orange yellowroots, frequently mixedwith the stems and taste is purely bitter,. Coptis trifolia. ANTHEMIS. 43 and, like the other bitters, its virtues are communicated to water and toalcohol. The bitter extractive is precipitated by nitrate of silver, andby acetate of lead. Gold-thread is a simple bitter, which has been compared to quassia;and may be used in all cases, where the simple bitter tonics are indi-cated. Like them,_it may be given in infusion {Copt. ?j; Aquae bul-lient. Oj : dose; f.|iss—fljij); or tincture, {Copt. |j; Alcohol, : dose ; —f.^iij) ; but neither of these is officinal. Should it bedesired to exhibit the powder, the dose may be from gr. x to 3ss. Besides the simple bitter tonics already described, the secondary listof the Pharmacopoeia of the United States contains the following: 11. Aletris, Star-grass. The root of %Bletris farinosa; Star-grass, Blazing Star, Mealy Starwort; Sex. Syst. Hexandria Mono-gynia ; Nat. Ord. Asphodelese; an indig
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