Caption:
Oval portrait of Reverend Dr. Stephen Hales, FRS, natural philosopher, botanist, chemist and inventor, author of Vegetable Staticks, 1677-1761. Handcoloured copperplate engraving by William Hopwood after a portrait by Thomas Hudson, RA, from Dr. Robert John Thorntons New Illustration of the Sexual System of Carolus von Linnaeus, the Temple of Flora, London, 1800.