Unpublished manuscript, 'Lac lake from India' by John Parrish Parrish writes about his 'discovery' of a new type of dye called lac lake [lac dye] that could be used as a less expensive substitute for cochineal, brought from India and rejected by East India Company dyers. He recounts his efforts to encourage broader use of the dye with limited success. Corrections and marginalia in ink appear throughout. Subject: Industry / Chemistry Written by Parrish in Beckington, Somerset [England]. [1810]