ALEXANDER, the well-known author of the English Concordance, was born at Aberdeen in 1701. Having removed to London in 1728, he set up a bookseller's shop in the Royal Exchange, and supported himself by correcting the press. He was subject to occasional fits of derangement, and died in a lunatic asylum at Islington, Nov. 1, 1770. In addition to the Concordance, Cruden compiled an index to Milton, appended to Bishop Newton's edition of that poet.