In the early eighteenth century a French missionary jeans  Baptiste Labat travelled to the Caribbean islands and wrote extensively about  the region. Published in one of his book this image Indigo production in the French slave plantations of the region. You can see the slave workers.putting the Indigo plant into the Indigo plant on the left Another worker is churning the liquid with a mechanical churner in a mechanical churner in a vat second from right two workers are carrying the Indigo to be dried in rhe foreground two others are mixing are mixing the Indigo pull to be put into moulds the planner in at the Centre of the picture.