The Columbia Encyclopedia, Sixth Edition. 2001-07.
Black, Joseph
172899, Scottish chemist and physician, b. France. He was professor of chemistry at Glasgow (175666) and from 1766 at Edinburgh. He is best known for his theories of latent heat and specific heat. He also laid the foundations of chemistry as an exact science in his investigations on magnesium carbonate, during which he discovered carbon dioxide, which he called fixed air.