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Stephen Hales

(1677-1761), Natural philosopher, chemist and inventor

Early Georgian Portraits Catalogue Entry

Sitter in 6 portraits
Hales was a clergyman and scientist whose discoveries inspired scientists throughout the 18th century. Elected to the Royal Society in 1718, he advanced knowledge in two main areas. Through his experiments on air flow he introduced ventilators to hospitals, prisons and ships. His work on animal and plant physiology, for instance the effects of the sun's rays on the sap of plants, increased understanding of food preservation.

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Stephen Hales

studio of Thomas Hudson
oil on canvas, feigned oval, circa 1759
NPG 1861

Stephen Hales

by James Macardell, after Thomas Hudson
mezzotint, (circa 1759)
NPG D2554

Stephen Hales

by James Macardell, after Thomas Hudson
mezzotint, (circa 1759)
NPG D2555

Stephen Hales

by William Hopwood, published by Robert John Thornton, after Thomas Hudson, and after Coates
stipple engraving and etching, published 1 December 1800 (circa 1759)
NPG D34344

Stephen Hales

by William Hopwood, published by Robert John Thornton, after Thomas Hudson, and after Coates
stipple engraving and etching, published 1 December 1800 (circa 1759)
NPG D35209

Stephen Hales

by William Hopwood, published by Robert John Thornton, after Thomas Hudson, and after Coates
stipple engraving and etching, published 1 December 1800 (circa 1759)
NPG D35210

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Stephen Hales

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