St. Croix River, Minn. and Wis., up to Taylors Falls. Letter from the Secretary of War, transmitting, with a letter from the Chief of Engineers, report on preliminary examination of St. Croix River, Minn. and Wis., from the mouth to Taylors Falls, with a view to the removal of logs and other obstructions, consideration being also given to the question of cooperation on the part of local interests in the construction of harbors, levees, and terminals at various points along said river.