. General therapeutics and materia medica: adapted for a medical textbook (Volume 2). nd the false barks aregiven in a tabular form by Dr. Pereira. August 11 ra bark is a valuable aromatic tonic; but partly inconse-quence of its liability to adulteration with so poisonous an article asthe bark of strychnos mix vomica, it has fallen into disuse. More-over, it was found not to possess the febrifuge or antiperiodic virtuesfor which it had been extolled ; and it is now never used except as anaromatic bitter, in cases in which articles of the class are very large doses, it is said to p
. General therapeutics and materia medica: adapted for a medical textbook (Volume 2). nd the false barks aregiven in a tabular form by Dr. Pereira. August 11 ra bark is a valuable aromatic tonic; but partly inconse-quence of its liability to adulteration with so poisonous an article asthe bark of strychnos mix vomica, it has fallen into disuse. More-over, it was found not to possess the febrifuge or antiperiodic virtuesfor which it had been extolled ; and it is now never used except as anaromatic bitter, in cases in which articles of the class are very large doses, it is said to prove emetic and cathartic; but it isnever prescribed in this country with any other view than as a tonic,nor is it extensively used in that relation. Should it be desired toadminister the powder, the ordinary dose is gr. x. to 3ss.; but themost common and the best form of preparation is the following:— IMTSni ANGCSTIM, INFUSION OF ANGOSTURA BARK. {Angustur. ; Aa. bullient. Oj.) The dose of this infusion is fsiss. to fsij. 16. SERPENTARIA.—VIRGINIA SNAKEROOT. Fig. Aristolochia serpentaria. Virginia snakerootis the rootof Aristolochia Serpentaria; Gynandria Hexandria; Aristolochiaceae—an herba-ceous plant, flowering in May andJune, and growing in rich shadywoods throughout the Middle,Southern and Western States. Itis collected in western Pennsyl-vania and Virginia; in Ohio, In-diana and Kentucky; is usuallyin bales,-containing one hundredpounds ; and is often mixed withthe leaves and stems of the plant,and with dirt from which it hadnot been well freed at the timewhen it was collected. The rootsof Aristolochia hirsuta, A. hastata,and A. reticulata, which scarcelydiffer from those of A. serpentaria,contribute indiscriminately to fur-nish the snakeroot of commerce;although the last is the only onereceived as officinal. The root ofaristolochia reticulata has been in-troduced of late, and is now notunfrequently used. It is derivedfrom the west
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