Caption:
Garden landscape with inventions of Stephen Hales using a bell jar and pneumatic trough for scientific experiments on plant physiology and transpiration in plants. Stephen Hales, natural philosopher, botanist, chemist and inventor, author of Vegetable Staticks, 1677-1761. Handcoloured copperplate stipple engraving by William Hopwood from Dr. Robert John Thorntons New Illustration of the Sexual System of Carolus von Linnaeus, the Temple of Flora, London, 1800.