Letter from the secretary of the Treasury, accompanying two statements, marked A & B, exhibiting the tonnage of shipping belonging to the several districts of the United States, at the close of the year 1796 : also, a comparative view of the tonnage of all vessels which paid duties in the ports of the United States, in each year, from 1790 to 1796, inclusively; distinguishing, generally, the employments of the vessels of the United States, and the tonnage of vessels belonging to different nations. : In pursuance of a resolution of this House, of the 4th instant. : 6th April, 1798.--Ordered to lie on the table. : Published by order of the House of Representatives of the United States.