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72 LAKE ERIE. Eleventh Buoy (No. 12).--Red spar. Marks northwest bank of straight channel, in 15 feet of water. Buoy No. 14, S. W. by W. &% W,, 2,400 feet. Turtle island light-house, N. W. TURTLE ISLAND LIGHT-STATION.--Fixed white light, 4th or- der, visible 141%4 miles. Square yellow brick tower, 44 feet high, with dwelling attached. On Turtle island, at entrance to Maumee bay. This light bearing S. by E. is obscured by chimney of dwelling. Monroe light- house, N. by E. 9/16 E., 10%4 miles. Detroit River (Bar Point) light- house, N. E. % N., 2134 miles. East end of woods on Cedar Point, 5. i; 4 miles. Twelfth Buoy (No. 11).--Black spar, and marks southeast bank of straight channel, in 15 feet of water. Cedar Point, S. E. 3 E. Turtle island light-house, N. W. % N. Thirteenth Buoy (No. 14).--Red spar. On northwest bank of straight channel, in 15 feet of water. Maumee Bay easterly range (rear), S. W. by S., 4,000 feet. Turtle island light-house, N. N. W. % W. Lower Elbow Buoy (No. 18).--A black 25-foot spar buoy, in 14 feet of water. On S. E. bank of straight channel. Marks the elbow where the channel widens to pass the crib and pile work. Maumee Bay easterly range (rear), S. W. by W., 3% W., 1,900 feet. Turtle island light-house, N. % W. Lower Elbow Buoy (No. 16).--Red spar buoy, in 15 feet of water Marks the elbow where the channel widens to pass the cribs and pile work. Turtle island light-house, N. 7% W. Easterly Range .Front and .Westerly Range Rear Light.--A_ fixed white light, 5th order, visible 13 miles. The focal plane of the light is 42 feet above the mean lake level. The light illuminates 315° of the horizon and is visible from all points of approach excepting in the sector covering North Cape or Bay point, between E. 7% N. and S. E. % E. The: tower is a red square pyramidal iron skeleton structure, sur- mounted by a watchroom and octagonal lantern, each white with black handrails. This light is the front light of the easterly and the rear light of the westerly range. On the axis of the straight channel dredged in Maumee bay, Ohio, from Lake Erie in to the mouth of the Maumee river. Turtle island, N., nearly 1%2 miles. Cedar Point, S. E. by E. % E., 3 miles. MAUMEE BAY EASTERLY RANGE REAR LIGHT-STATION and WESTERLY RANGE FRONT LIGHT.--Two fixed white lights, 5th order, visible 13 miles. Lights 64 arid 25 feet, respectively, above lake level. Red square, pyramidal skeleton iron tower; each light having square watchroom and octagonal lanterns, white. On the axis of the straight channel in Maumee bay, Ohio, 1,242 feet (%4 mile), S. W. by W. 1% W. from the preceding. Both lights shown from the same tower (1,240 feet, 4% mile), S..W. by W. % W. from the easterly range, front and westerly range, rear light. The upper light is the rear light of the easterly range, the lower light is the front light of the westerly range. These ranges mark the dredged channel into Maumee bay, and are placed in the axis of the channel. Both lights are visible through an arc of 180° or 90° on either side of range line. Width of Channel Buoy, E. (No. 15).--A black spar buoy, in 16 feet of water, has been placed on the southeast bank of the channel, opposite to the middle of the pile work, and shows the extreme width of the chan- nel. Turtle island light-house, N. 114 miles. Maumee bay, easterly range rear, W. % S., 600 feet. y, y rang Width of Channel Buoy, W. (No. 18).--A red spar buoy, in 15 feat of water, has been placed on the northwest bank of the channel, opposite to