'The Dutch Chymist', c 1780s.
© Science Museum / Science & Society Picture Library
Copper engraving by J Boydell after a painting by J Stein, 'Engraved from the Original Picture in the collection of Mr Leviez'. A chemist sits before a table stirring the contents of a pot heating over a small oil stove. In the background, two shadowy figures read, and a woman holding a cloth to her face breastfeeds a child.