Herman Boerhaave, Dutch physician, chemist and botanist, early 18th century.
© Science Museum / Science & Society Picture Library
Engraving by J Chapman of Boerhaave (1668-1738) who became Profesor of Medicine and Botany at Leyden in 1709. Boerhaave realised that both plants and animals are governed by the same law of generation. He gained international recognition and became rich through treating patients who came to him from all over Europe. His chief works include 'Medical Principles' (1708), 'Aphorisms on the Recognition and Treatment of Diseases' (1709), and 'Elements of Chemistry' (1724). Illustration from 'Encyclopaedia Londinensis, or, Universal Dictionary of Arts, Sciences, and Literature' published in London, 1810-1829.