ALANSON L. COOPER, son of Barnabas, and grandson of Dea. John Cooper, was born Oct. 16, 1804. He possessed intellectual powers of the highest order. He studied medicine and graduated at Brunswick, Me., in 1827, after which he went to Europe, and during his absence spent several months attending hospital practice at Paris. He commenced practice at Auburn, N. Y., where he died in,] 841. As a poet, the few gems that have been preserved from his pen indicate a rare genius.