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Stephen Hales

The Columbia Encyclopedia, Sixth Edition | Date: 2008

Stephen Hales 1677-1761, English physiologist and clergyman. From 1709 he was perpetual curate of Teddington. His experimental studies in animal and plant physiology contributed greatly to the progress of science. In his investigations of circulation he made the first measurements of blood pressure by inserting a tube in a horse's artery. Plant physiology was given impetus by his work on transpiration, root pressure, circulation of sap, and the relationship between green plants and air. His inventions included apparatus for ventilating buildings. Some of his studies are described in his Vegetable Staticks (1727), Haemostaticks (1733), and A Description of Ventilation (1743).

Author not available, HALES, STEPHEN., The Columbia Encyclopedia, Sixth Edition 2008

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	Hales, Stephen Plant Sciences Hales, Stephen English Physiologist 1677-1761 Stephen Hales was a preeminent scientist of the late eighteenth century ... founder of plant physiology . Born in Kent, England, in 1677, Hales grew up in an upper-class Kent family and was educated at ... Read more
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