Letter from the Secretary of War, transmitting with a letter from the Chief of Engineers, report on preliminary examination for waterway from Lake Superior to the Mississippi River by way of Allouez Bay, at the easterly end of the Duluth-Superior Harbor, and the Amnicon, Moose, and St. Croix Rivers, Minn. and Wis.; Also a report by the Board of Engineers for Rivers and Harbors, reviewing said report, and also submitting its views in compliance with a resolution of the Committee on Rivers and Harbors of the House requesting the Board to reexamine report printed in House Document No. 304, Sixty-first Congress, Second Session.