Stephen Hales, Pneumatic Trough, 1727
An illustration of a pneumatic trough, used by chemists to collect gases and invented by Stephen Hales (1677-1761). Hales, was an English clergyman who made major contributions to a range of scientific fields including botany, pneumatic chemistry and physiology. He was the first person to measure blood pressure and invented several devices apart from the pneumatic trough, including a ventilator and a surgical forceps for the removal of bladder stones. This image is from Vegetable Staticks (1727), which contains an account of experiments in plant physiology and chemistry
Picture No
13344211
Media ID
47783207
Size
4254px x 3680px
(5.2MB)
Credit
© Science Source / Mary Evans Picture Library
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Source
Science Source
