John Jeffries
by Collection Abecasis/science Photo Library
Title
John Jeffries
Artist
Collection Abecasis/science Photo Library
Medium
Photograph - Photograph
Description
John Jeffries (1744-1819). 1867 illustration of the US physician, meteorologist and balloon aviation pioneer Dr John Jeffries. Jefferies was a British military surgeon during the American Revolution. In London, in 1784, he made a scientific study of the air at high levels. He approached French balloonist Jean-Pierre Blanchard and (with a barometer, thermometer, hygrometer, electrometer, and mariner's compass) they made two flights. His observations were passed to the Royal Society. The first flight was from London to Dartford, the second in 1785 making the first aerial crossing of the English Channel.
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September 16th, 2018
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