Catalogue of the collections / compiled by E.M. Holmes.

Date:
1878
Catalogue details

Licence: Public Domain Mark

Credit: Catalogue of the collections / compiled by E.M. Holmes. 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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    G2 298. (12) Cinchona officinalis, continued. This variety (Chahuarguera, Pav.) is that which had the reputation of curing the Countess of Chinchon. It may be distinguished from other pale barlcs by its rusty brown aspect and minute brown dots or warts, which latter are often in the larger quills spUt like a coffee berry, Var. y. Bonplandiana,/. coloeata, Row. (Var. coloeata, Pav.) a. Small qnills. See P. J. [1], vol. xiii., p, 671, No. 2. b. Ditto. {JEast Indian Grown JBark.) Note.—Specimen a agrees in appearance with the colorada del Key of Euiz and Pavon. Analysed by Howard, it yielded— Quinidine and uncrystallized quinine ... 1'67 Cinchonine 0-37 1-94 This variety of East Indian bark is easily recognised by its broad bright brown stripes, on a dark ground, caused by longitudinal cracks with thick edges, exposing the interior. It is of excellent quality, yielding 7-8 per cent, of alkaloids. See P. J. [2], vol. viii., p. 593, No. 4, 5. Var. 8. Bonplandiana, /. lutea, How. (R. 0. Grown lark, partly.) See Howard, Quinol. E. I. Plantat., p. 89 and pi. xi. a. Quills. P. J. [1], vol. viii., p. 671, No. 1. Note.—This appears to be the same as the amariUa del Eey of E. et P. in the British Museum. It is the bark described under the heading of a in Per. Mat. Med., 3rd ed., vol. ii., pt. ii., p. 1639 ; and the C. lutea and amarilla del Eey of Pavon. This bark is of a dark grey colour, with very numerous transverse cracks, interspersed among which are numer- ous small raised warts of the same colour as the bark. The Crown bark from Java somewhat resembles this bark in appeai-ance. Var. e. CRisvAjHow. (C Grispa, Tafalla, ofHoivard's Quinologia.) a. Slender quills. P. J. [1], vol. xiv., p. 61, No. 9. Note.—This specimen is the silvery Crown bark of Pereira, and has been clearly identified with specimens taken by Seemann from C. offi- cinalis, a. Vera, Wedd. See Per. Mat. Med., vol. ii., pt. ii.,p. 1609, note 3. It is the true Loxa bark of Humboldt, and the cascarilla fina de Loxa of Euiz and Pavon. It is also the quina, or crespilla carrasquena of old authors, and the quina fina de Loja of modern trade. P. J. [2], vol. viii., p. 16. Analysed by Howard, it yielded— Quinidine and uncrystallizable quinine ... 0-40 Cinchonine ... ... ... ••• ••■ 0'03 0-43 East Indian bark obtained from this species yielded only 0-629 per cent, of alkaloids. See P. J. [2], vol. viii., p. 593. The specimen in this collection is remarkable for the thick edges of the numerous ramifying fissures, which form a sort of raised network on the bark. It closely resembles in size and colour the East Indian Uritusinga bark. (13) Cinchona oyata, Wedd. Var. a. VULGAEIS, Planch. a. Flat pieces. Note.—ThiB specimen much resembles CaUsaya in appeai'ance, but is not so bitter, and has the remains of a silvery periderm.