| Description | Introductory letter on his work by John Parrish, and a paper concerning his 'discovery' of a new type of dye that could be used as a substitute for cochineal, called lac lake [lac dye] and found in India. After the paper is a short follow-up letter requesting any information the Royal Society might have on the lac lake dye.
Subject: Industry / Chemistry
Written by Parrish in Beckington, Somerset [England]. |