A description of the genus Cinchona, comprehending the various species of vegetables from which the Peruvian and other barks of a similar quality are taken. Illustrated by figures of all the species hitherto discovered. To which is prefixed Professor Vahl's dissertation on this genus, read before the Society of natural history at Copenhagen. Also a description, accompanied by figures, of a new genus named Hyænanche: or hyæna poison.

  • Lambert, Aylmer Bourke, 1761-1842.
Date:
1797
Catalogue details

Licence: Public Domain Mark

Credit: A description of the genus Cinchona, comprehending the various species of vegetables from which the Peruvian and other barks of a similar quality are taken. Illustrated by figures of all the species hitherto discovered. To which is prefixed Professor Vahl's dissertation on this genus, read before the Society of natural history at Copenhagen. Also a description, accompanied by figures, of a new genus named Hyænanche: or hyæna poison. Source: Wellcome Collection.

Provider: This material has been provided by Royal College of Physicians, London. The original may be consulted at Royal College of Physicians, London.

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    [ 4* ] compact, and of a darker colour : it is very brittle andre- linous. The innermoft layer is more woody and fibrous, and of a brighter red. In powdering this Bark, the mid- dle layer, which feems to contain the greateft proportion of refinous matter, does not break fo readily as the reft; a circumllance to be attended to, left the moft active part fhould be left out of the fine powder. This red Bark to the tafte difcovers all the peculiar flavour of the Peruvian Bark, but much ftronger than the common officinal fort. An infufion in cold water is intenfely bitter, more fo than the ftrongeft decocftion of common Bark. Its aftringency is in an equal degree greater than that of the infufion of common Bark, as is fhewn by the addition of martial vi- triol. The fpirituous tincfture of the red Bark is alfo pro- portionably ftronger than that of the pale. The quanti- ty of matter extracted by rectified fpirit from the powder of the former was to that from the latter as 3 to 2 in one experiment, and as 229 to 130 in another; and yet on in- filling the two refiduums of the firft experiment in boiling water, that of the red Bark gave a liquor confiderably bit- ter, and which ftruck a black with martial vitriol; while that yielded by the other, was nearly taftelefs and void of aftringency Refpecfting the medicinal properties we have feveral refpe£table authorities, fhewing, that as the red Bark pof- fefles the fame virtues with the common, in amuch higher * Lewis, 1. c. degree,