Brown, Samuel, M.D., chemist, born in Haddington, grandson of John Brown of Haddington, whose life was devoted, with the zeal of a mediæval alchemist, to a reconstruction of the science of atomics, which he did not live to see realised: a man of genius, a brilliant conversationist and an associate of the most intellectual men of his time, among the number De Quincey, Carlyle, and Emerson; wrote “Lay Sermons on the Theory of Christianity,” “Lectures on the Atomic Theory,” and two volumes of “Essays, Scientific and Literary” (1817‒1856).
Definition taken from The Nuttall Encyclopædia, edited by the Reverend James Wood (1907)
Brown, Robert * Brown, Thomas