Bark - Specimen details

Bark - Specimen details

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Catalogue Number: 56875

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Plant Name 65.01 RHIZOPHORACEAE Rhizophora sp Entry Book Number 19.1906
Artefact Name Bark Vernacular Name
Iso Country Bahamas TDWG Region Bahamas
Parts Held Bark Geography Description Bahamas, Nassau
Uses BarkUse: MATERIALS - Tannins/Dyestuffs User: Man TDWG use MATERIALS - Tannins/Dyestuffs
Storage Bottles, boxes etc Related Items
Donor Cunningham WM Curator Botanic Station Donor No
Donor Date Donor Notes
Collector Collector No
Collection Notes Collection Date
Exhibition Expedition
Number Components Publication
Notes: Label source: Mangrove bark submitted for report by WM Cunningham, Curator Botanic Station, Nassau. (See Letter .45.1906) Dear Sir, The bark is of fair strength though the East Indian Mangroves not un frequently run up to over 40% of tanning matter as de, termined by the hide-power method, but it is extremely red in colour which takes off very much from its commercial value. This is shown both by the tanned sample of leather tinctometer colour test. I do not think that the bark would pay for importing in t, o this country, though it may no doubt be a useful tanning material on the spot. Enclosure: Dear Sir, I beg to inform you that the following are the results of analysis of your sample of bark marked, mangrove from Nassau, Bahamas according to the method o, f the International Association of Leather Trade Chemists:- Tanning matter absorbed by hide -25%, Soulable non tanning matters-11.2%, insoluable in cold water-51.2%, water-12.6% Specific gravity- 15 degrees c. Tinctometer colour measurement of solution co, ntaining 0.5% of tannin matter in 1 cm cell. sample tanned in 1% solution of tanning matter;- red 20.5% yellow 23.7% black-. Henry R Proctor Feb. 22nd 1906. To J.M. Hillier Esq.

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