Proceedings of the Committee of Commerce and Agriculture / Royal Asiatic Society.

  • Royal Asiatic Society of Great Britain and Ireland. Committee of Agriculture and Commerce.
Date:
[1840]
Catalogue details

Licence: Public Domain Mark

Credit: Proceedings of the Committee of Commerce and Agriculture / Royal Asiatic Society. Source: Wellcome Collection.

Provider: This material has been provided by The Royal College of Surgeons of England. The original may be consulted at The Royal College of Surgeons of England.

    21/30 (page 155)
    useless, and contains neither colouring nor astringent matters. The yellow colours dyed with it are tolerably good, but not desirable. P.K. Ukulbere. A bark used for dyeing silk yellow. It contains a very bitter yellow colouring matter, probably analogous to the bitter principle of Quassia. As a dye-stuff it does not appear likely to be useful; but its bitter principle might probably render it of value in medicine. P.L. Sea Haidar. Probably black Myrobolans, greatly resembling the fruit of the Terminalia in character and composition, like it contain- ing tannin, gallic acid, gum, extractin, and a yellow colouring matter; but less astringent, and containing more acid than the Hurda. P.N. Small dark-coloured seeds, similar in|appearance to carraway, and yielding like them an aromatic volatile oil. P.P. Sajeekhar, or Alcali. The sample so labelled, is in fact nothing but common salt, of very good quality, being native, or rock salt; and not a manufactured variety. P.R. Lac. Of poor quality. P.T. Toondana. A yellow dye. The flowers of Cedrela toona; they contain a yellow colouring matter, and have a very agreeable odour, resembling fresh honey. They would probably yield a volatile oil on distillation with water. The colours dyed with it are pretty; but apparently not very durable. It would be worth while to examine the bark of the tree yielding these flowers, as it is stated by Dr. Roxburgh to be powerfully astringent. P.U. and V. Indigo. Of very inferior quality; so much so, as at first to render it almost doubtful whether they are really indigo. They contain a very large per centage of earthy impurities, so that it is evident that they have been purposely adulterated. They yielded, on analysis, between 60 and 70 per cent, of earthy matters, and a very large quantity of resin, probably occasioned by imperfection or careless- ness in the manufacture. They would be worth from Is. to Is. 6d. per lb. P.W. Borax. The specimen thus labelled is, merely, common sal ammonia. Samples from Mysore. M.B. and M.C. Linseed. Rather unfavourable samples, the seed being slightly decayed and a good deal mixed up with dirt and im- purities ; they yielded an average of about 29 per cent, of oil. M.D. Seed of Carthemus tinctoria, or Safflower. This seed yields the oil called Kossumba and which has before been adverted to as being one of the series of twelve received from Bombay, (see p. 94.)