Sir Humphry Davy

A portrait of Sir Humphry Davy, taken from the 1831 book The Life of Sir Humphry Davy by John A. Paris.  Published by Colburn and Bentley. The artist who did the engraving is unknown, but Wikimedia Commons says the image is "based on a portrait by Sir Thomas Lawrence (1769-1830)."

Image via Wikimedia Commons.