James Black FRSE FGS (1787–1867) was a Scottish physician, geologist and paleontologist who investigated the capillary circulation of the blood (1825), as well as matters of fever and bowels.
In 1808 he was granted a Licentiate of the Royal College of Surgeons of Edinburgh.
He was an Assistant Surgeon in the Royal Navy in 1809, during the Napoleonic Wars.
He was then a doctor in Newton Stewart in south-west Scotland before being given a post of House Physician at the Union Hospital in Manchester in 1839.
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