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50 LAKE ERIE. island; least water on reef, 12 feet. Shoalest water S. W. by W. from buoy, about 150 yards. Green Island light-house, N.W.¢N., 3 miles. Moore's Point, §. 8. W. ¢ W. Starve Island Reef buoy, E. N. E.4E,, seven-eighths mile. Niagara Reef buoy, N. W. by W. + W., 8 miles. GREEN ISLAND LIGHT-STATION.--A fixed white light, 4th order, varied by white flashes at intervals of two minutes, visible 14 miles. Gray, square tower, 43 feet high, attached to dwelling, lantern white. On the west end of Green island, Lake Erie; a rocky, wooded island, 15 acres in extent, 1 mile west of - South Bass island; shores bold; shut in by woods from N. E. by E. LE. by E"dtoS8. E. by E. West Sister Island light-house, N.W. by W. = W., 14 miles. Niagara Reef.--Black, 2d-class can buoy in 14 feet of water. Marks the north side of a small reef, with 7 feet of water on it and deep close-to, lying 14 miles south of the range between Green Island and West Sister Island light-houses. There is much foul ground between this reef and the south shore, and strangers should not attempt the passage on that side. Shoalest spot, southwest from buoy, 200 yards. North end of West Sister island, N. W. # W., 84 miles. Green Island light-house, E. S. E. 4 E., 53 miles. WEST SISTER ISLAND LIGHT-STATION.--A fixed white light, 4th order, visible 134 miles. White, conical tower, 44 feet high, connected to dwelling by covered way} light, 51 feet above lake level. Onthe southwest end of West Sister island, Lake Erie; area of island, about 100 acres. A reef extends one-third. mile from the southeast side of the island; bold, rocky shore on other sides. A RED light shown from the station in place of the usual white light, is to be understood as a distress signal. Passing the island one-half mile to the southward, the course to Turtle Island Shoal buoy is W. % N., 144 miles. Green Island light- house, 8. E. by E. 2 E., 14 miles. Turtle Island light, W.4EN,, 144 miles. Port Clinton.--Light discontinued and buoys removed. -- Maumee Bay. Main or West Channel of Maumee Bay.--This chan- nel is dredged from the Turtle Island Shoal buoy, in six straight reaches (following the deepest water) across the bay, to within three- fourths of a mile of the mouth of the Maumee river, where a deep natural channel, about 200 yards wide, is reached, leading up the river to the city of Toledo. The dredged channel is 200 feet in width, widened at the elbows to from 300 to 400 feet, and the inner bank