General therapeutics and materia medica (volume 1): adapted for a medical text book . er proportion. Snakeroot, as met with in the shops, consists of the rootstock, whenceproceeds a tuft oflong, slender, yellowish or brownish fibres. The colourof the powder is grayish ; the smell of the root aromatic and agreeable;and the taste warm and bitter. It yields its virtues to water and to main active constituents are volatile oil, the odour and taste of whichhave been compared to that of valerian and camphor combined,—andbitter principle ; the former being the source of the aromatic and e
General therapeutics and materia medica (volume 1): adapted for a medical text book . er proportion. Snakeroot, as met with in the shops, consists of the rootstock, whenceproceeds a tuft oflong, slender, yellowish or brownish fibres. The colourof the powder is grayish ; the smell of the root aromatic and agreeable;and the taste warm and bitter. It yields its virtues to water and to main active constituents are volatile oil, the odour and taste of whichhave been compared to that of valerian and camphor combined,—andbitter principle ; the former being the source of the aromatic and ex-citant,—the latter that of the tonic properties. Serpentaria has had great reputation as an excitant tonic; and, at onetime, was employed to arrest intermittents ; but now that we possessmore potent agents, it is rarely given except in association with is much prescribed to support the powers in adynamic conditions ofthe frame. Should it be desired to exhibit it in powder, the dose maybe from gr. x to Jss, and more; but the following preparations are to Aristolochia serpentaria. ARTEMISIA. 47 ^ INFUSUM SERPENTARUI, INFUSION OF VIRGINIA SNAKEROOT. (Serpentar.§ss; Aquce bullient. Oj.) The dose is to mCTFBA SERPENTARIJ, TINCTURE OF VIRGINIA SNAKEROOT. ( 3iij ; Alcohol, dilut. Oij ; prepared either by maceration or bydisplacement.) The tincture is rarely prescribed alone; but is addedto tonic infusions, especially to the infusion of cinchona. The dose to Serpentaria forms part of the Tinctura cinchonce composita of thePharmacopoeia of the United States. Fig. 132. 17. ABSINTHIUM.—WORMWOOD. The tops and leaves of Artemisia absinthium, common wormwood,are officinal in the Pharmacopoeia of the UnitedStates. The plant is indigenous in Europe, inthe southern part of which it grows abun-dantly. It is also met with on roadsides andrubbish-heaps in Great Britain; but the drug-gist is supplied with it from gardens
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