Contracts -- Treasury Department. Light-houses -- miscellaneous claims -- purchases by collectors of customs -- statement Marine Hospital Fund. Letter from the Secretary of the Treasury, transmitting 1st. statement of contracts authorized by the Treasury Department in 1831, 2d. statement of contracts for light-houses, &c., 3d. payment of miscellaneous claims, &c., 4th. statement of contracts, &c., by collectors of the customs, 1830., 5th. statement of the Marine Hospital Fund, 1831.