CLARK, Sheldon, philanthropist, born in Oxford, Connecticut, 31 January, 1785; died there, 10 April, 1840. Without going through the College course, he studied under President Dwight, and became a farmer. In 1823 he placed $5,000 at the disposal of Yale College, to be invested at compound interest until it should amount to $20,000, when it was to be used for founding a professorship, and in 1848 the " Clark professorship of moral philosophy" was established on this foundation. Mr. Clark also gave a scholarship fund to the College, bought a telescope for it, and bequeathed it $15,000. He published several pamphlets, and left numerous manuscripts on finance, economics, and metaphysics. He received many letters from noted men in relation to his pamphlets, and one from Thomas Jefferson is given at length, in a sketch of Mr. Clark by Prof. Silliman in the "American Journal of Science" (xii., 217).