«•> NATURAL PRODUCTIONS OF THE EAST INDIES. 



compliments to Mr. Wilkins, when you can furnish him 

 with an account of their properties. 



I remain, my dear Sir, 



Yours very truly, 



W. ROXBURGIL 



Calcutta, Alnil?,, 5808, 



My dear Sir, 



FeTerbark. ^^•'' Amos informs me, that more of my fever bark is 



wanted, I nuean the swietenia febrifuga, (see Coromandel 

 Plants, Vol. I, page 18, tab. 17,) of the properties of which 

 I gave you particulars in March, 1806. I am sorry it is not 

 in my power to send any from hence at present, as I have 

 none by me, and .the tree grows among mountains many 

 hundred miles from hence. I left some when in England 

 with Mr. Salisbury, at the Botanic garden, Brompton. 



Ctdiicay galls. 1 wish to know the real value in England of the caducay 

 'galls, one of the most useful dyeing drugs known in this 

 country, and of which a particular account is given in a let- 

 ter of mine, inserted in the 23d volume of the Society's Trans- 

 actions. If the Mediterranean trade should be obstructed, 

 this article would be of great service in dyeing the manu- 

 factures of Great Britain, and particularly in the Turkey 

 red dye upon cotton, as a valuable substitute for the Aleppo 

 galls. 



I have at last got the orange dyeing drug, called wassun- 

 tagunda, for the Society, and Dr. Bancroft's experiments ; 

 it is a powder found on the seed-vessels of my rottleria tine- 

 toria. See Coromandel Plants, Vol. II, No. iCS. 



fiartl black I have procured a log of the hard black wood (seetsaulj, 



'^^^ ' and have shipped it in the Georgina packet. Captain Leigh, 



to be delivered to Mr. Wilkins, the Hon. Company's Mu- 

 seum-keeper. It is reckoned the largest and most durable 

 wood of this country; but still I fear it will be too soft to 

 be a good substitute for lignum vit-e. 



The wassuntagunda I have also sent under cover to Mr. 

 Wilkins ; he will no doubt send it to vou. 



You 



Crange dye. 



