46 
Royan Garpens, Kew, to IwprA OFFICE. 
Sm, Royal Gardens, pi January 31, 1883. 
I AM desired "id Sir Joseph cru cde ntorm you u that i inquiries 
cally it is known to consist of the magnesian salts of an acid termed 
purreic or euxanthic acid. But as it contains no nitrogen, the traditional 
account of its source appears improbable. 
It seems likely, ase that it is a substance of vegetable origin, 
and in this case inquiry through me proper channels ought to elicit 
some authentic information about it. may mention that various 
papers which have been transmitted rd this establishment in reference 
to Indian dyes do not appear to contain any reference to it. 
ir Joseph Hooker would, therefore feel € : I would draw 
the metalation of the Government of mee to the ma 
m, &e. 
(Signed) W. T. THISELTON DYER. 
Sir Louis Mallet, C.B. 
IND1A OrricE to ROYAL GARDENS, KEW. 
Sir, India Office, S.W., March 19, 1883. 
I am directed by the Secretary of State for India in Council to 
acknowledge the receipt of your letter of the 31st ultimo, relative to 
Purree or Indian Yellow. In reply I am to request you to inform Sir 
Joseph. Hooker that a copy of your letter has been sent to the Govern- 
ment of India for such action as they may find they ean take in tracing 
Joseph Hooker may, therefore, be eu yd to make inquiries concerning 
its sources also through the Foreign Office 
m, &c. 
( Signo) Joun K. Cross. 
W. T. Thiselton Dyer, Esq., C.M.G., F.R : 
Inpa Orrice to Roya GARDENS, Kew. 
Str, India Office, November 17, 1883. 
Iw continuation ` des letter of the 19th March last, 1 am directed 
by the Secretary of State for India in Council to transmit to you, for 
Sir Joseph Hooker’s inforiátion, the accompanying copy of a report on 
"Y produetion of Puree or Indian Yellow, received from the Government 
of India. 
The samples of Puree exce 4 the report have, it is understood, 
been sent to Sir Joseph Hooker dire 
m, &c. 
(Signed) J. A. GODLEY. 
W. T. Thiselton Dyer, Esq., C.M.G.; F.R.S 
