1010 ELEMENTS OF MATERIA MEDICA.
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vegetable substances exceed cinchona in the quantity of this acmtliey contain, so they surpass it in astringency. Hence the topwaof bark are, comparatively, unimportant; and, for the most /atootljnearly obsolete. Powdered cinchona is frequently employed aspowder. Formerly it was used as an application to mortified p ar • ’ulcers, caries, &c. The decoction, with or without hydrochloricis applied as a gargle in putrid sore throat. ,
7 . As a chemical antidote .—The value of cinchona bark, as a c ^antidote, depends on its tannic acid. I have already offered some . jvations on its employment in poisoning by emetic tartar (see p-believe, in all cases it might be advantageously replaced by otl1 ^more powerful astringents; as nutgalls, or, on an emergency? S reeI \ a J-Administration. —In the form of powder, cinchona is now rarC j eJ1 cyministered. The bulk of a full dose, its disagreeable taste, h- s teI1to cause nausea and vomiting, and the quantity of inert ? 0 fitswhich it contains, form great objections to its employment. * e . ^ jtsgreat efficacy, as a febrifuge or antiperiodic, in intermittents, an( c;l nsuperiority in these cases, to the decoction or infusion, no douexist; but sulphate of quinia has almost entirely superseded i ■ t | lCdose is from a scruple to a drachm, or even more than this? wnstomach can bear it. r, ul v
1. Infusum Cinciionm, L. E. D. (Lance-leaved Cinchona species of Cinchona , according to prescription, 23.], bruised [i® ' a tei,E., in fine powder, U.],3j.; Boiling [Distilled , L. Cold, D-i ,- r j,tlyOj. [flxij. if.]Macerate for six (four, E.) hours in a vecovered, and strain [through linen or calico, E .]—The directionDublin College are as follows: Triturate the bark with a little of t'j 6 ^ our s,and during the trituration pour on the vest; macerate for ^at efshaking it from time to time, then pour off the clear liquor)- ]j l0 eextracts from cinchona bark the kinates of quinia, cinchonia, angum, soluble red cinchonic (tannin) and yellow colouring matter.^greater part of the cinchona alkaloids remains in the marc, assmall quantity only of the compound of red cinchonic and the cl j to nic>alkaloids is extracted.—The infusion of cinchona is stomachic an ra -but is scarcely energetic enough to be febrifuge. It is a light p ^ ca jj-tion, applicable as a tonic where the stomach is very delicate, an ^ j snot support the more active preparations of this medicine. The
f3j. to fSij. thrice a day. . £0'
2. Decoctxjm Cinchona , E.—(Crown, Gray, Yellow, or ,^ e letchona, 3j. bruised; Water, fjxxiv. Mix them, boil for ten
the decoction cool, then filter it, and evaporate to sixteen ftuid° UIlt - ^jyDecoctum Cinciionm, D.—(Bark of Lance-leaved Cinchona , ■„£)•
powdered, Sj.; Water a sufficient quantity to afford a pint after stf Jia)Decoctum Cinciionm cordifolim, L. — (Heart-leaved ^^tly"bruised, 3x.; Distilled Water , Oj. Boil for ten minutes in a l °covered vessel, and strain the liquor while hot). llS ing
Decoctum Cinciionm lancifolim, L.—(As the preceding, 1)11Lance-leaved Cinchona ). put
Decoctum Cinciionm oblongifolim, L.—(As the preceding?using Oblong-leaved Cinchona ). . . c jfl-
By boiling, water extracts from cinchona the kinates of 4 11111 , ’ jiiigchonia, and lime, gum, soluble red cinchonic (tannin), yellow co