Supplement 2, 1904, corrections and additions to bulletin 14, a, Lake Superior and St. Marys River; b, Lake Michigan and Green Bay; c, Lake Huron, St. Clair River, Lake St. Clair, Detroit River; d, Lake Erie and Niagara River to Niagara Falls; e, Niagara River below Niagara Falls, Lake Ontario, St. Lawrence River: to supplement information given upon charts of Great Lakes.