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Show RED PERUVIAN BARK TREE. 128 RED PERUVIAN BARK TREE. account of the tree in the Memoirs of the Academyof Sciences at Paris in the year 1738, who both say, that taking the bark from an old tree effectually kills it; but that most of the young trees which are barked, recover, and continue healthy ; and that for these reasons the Spaniards now barked the youngertrees for foreign markets, thoughtheystill imported into Spain some of the bark of the old trees, which they esteemed to be much moreefficacious than what was got from the young. Fromthese accounts Dr. Saunders concludes, that the large red bark, brought to London in the year 1779, was of the same kindas that used itousoati by Sydenham and Morton, as it answers to the description of the bark used in their time, which is given by Dale, and other writers on the Materia Medica, who were their cotemporaries. Dr. Saunders says that it is not only stronger and moreresinous, but likewise moreefficacious and certain in its effect, than the commonbark, and had cured manyagues after the other had failed. The yellow bark has, like the red bark, superior qualities to the commonbark ; but these; as we observed before,are morefrequently adulterated than the other *. The salt of bark, prepared by Godfrey and otherchemists, merits more attention thanit has hitherto received. Wherethe bark has been in other forms rejected by the stomach, as in some old very gouty habits, I have foundthat this as a tonic has succeeded ; and where there has been ulcerated sore throat, and glandular swellings from scrofula, I have experienced great advantage by ordering it to be taken, by first moistening the finger and dipping it in the barkflakes, and then applyingit to the tongue, and swallowing the saliva; and in a case of mortification, where powdered bark was rejected, I had the pleasure to find that this remained, and produced a most happyeffect. Decoction or Cincuona Bark, (Decoctum Cinchonz Officinalis. EK.) Take of cinchona bark, in powder, one ounce ; water, one pound anda half: Boil for ten minutes in a covered vessel, and strain the liquor while hot. Decoction or Peruvian Bark. (DecoctumCorticis Peruviani. L.) Take of Peruvian bark, powdered, one ounce; distilled water, one pint and three ounces : Boil for ten minutes in a covered vessel, and strain the liquor while hot. Decocrion or Crxcnona Bark. (Decoctum Corticis Cinchone. D ) i water, one pint: Boil for ten minutes in a vessel almost covered, andstrain the liquor, while hot, through linen. Take of Peruvian bark, in powder, one ounce ; water, one pound: Macerate for twenty-four hours, and filter. Cinchonabark readily yields its active principles to the action of boiling water, and in greater quantity than cold water is caSaat * All these barks, we are happy to informthe public, may be obtained genuine, and superlatively fine, of Mr. Adcock, chemist, Leadenhall-street, opposite the India-house, a gentleman who has made it his study to supply the faculty with the very best drugs of every kind, Triturate the bark with a little of the water, and addthe re. mainder during the trituration. Macerate for twenty-four hours, and decant the pure liquor. This is a very elegant form of exhibiting the active principles of cinchona bark, and that in whichit will sit lightest on weak and delicate stomachs. ‘he trituration directed by the Dublin college will promote the solution. ‘The residuum of the cold infusion may be afterwards employed in making other prepara. tions, especially the extract, for its virtues are by no means cxhausted. But it must never be dried andsold, or exhibited in substance, for that would be a culpable fraud. Take of Peruvian bark, in coarse powder, one ounce; PREPARATIONS. Inrusion or Cincnona Bark. (Infusum Cinchone Officinalis. KE.) very (Infusum Cinchone sine Calore. D.) Take of Peruvian bark, in coarse powder, one ounce; water, twelve ounces, by measure: pable of retaining dissolved ; therefore when a saturated decoc. tion cools it becomes turbid, and there is always a deposition of a yellowish or reddish powder, while the supernatant liquor is reduced to the strength ofa saturated cold infusion. Decoction, kK |