BAKER, HENRY English naturalist, was born in London on May 8, 1698. His invention of a system of instruct ing the deaf and dumb brought him to the notice of Daniel Defoe, whose youngest daughter Sophia he married in 1729. A year be fore, under the name of Henry Stonecastle, he was associated with Defoe in starting the Universal Spectator and Weekly Journal. He contributed many memoirs to the Transactions of the Royal Society, and in 1744 received the Copley gold medal for micro scopical observations on the crystallization of saline particles. He was one of the founders of the Society of Arts in 17J4, and for some time acted as its secretary. He died in London on Nov. 25, 1774. His name is perpetuated by the Bakerian lecture of the Royal Society, for the foundation of which he left by will the sum of .£ 1 oo.