Dyeing: vats and cauldrons for extracting indigo. Coloured engraving by J. Pass.
Wellcome Collection

Dyeing: vats and cauldrons for extracting indigo. Coloured engraving by J. Pass.

John Pass

CC0 — Public Domain
Wellcome Collection

Lettering: Nerium. Dyer's Rose-bay and the machinery for extracting indigo from it. ; J. Pass sc.

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