Black, Joseph, a celebrated chemist, born at Bordeaux, of Scotch parents; the discoverer of what has been called latent heat, but what is really transformed energy; professor of Chemistry, first in Glasgow, then in Edinburgh, where his lectures were very popular; his discoveries in chemistry were fruitful in results (1728‒1799).
Definition taken from The Nuttall Encyclopædia, edited by the Reverend James Wood (1907)
Björnsen * Black, William