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LAKE ERIE. 7 57 _ Black River to Pelee Spit,--When 1 mile north of pierhead light, steer N. W. by N., 30 miles, to a point 14 miles south of the Spit light. 7 . Black River to Middle Passage.--When 1 mile north of pierhead light, steer N. W_ by W.% W., 284 miles, to a point $ mile south of Middle Island light, passing 4 mile north of Gull Island Shoal buoy. Sandusky to Green Island.--When 1} miles northeast of Cedar Point light and in range of beacon, steer N. W. by N. 4 N., 44 miles, to a point 13 miles north of Marblehead light, thence = a . by W. for 94 miles, to a point 1 mile south of Green Island lig ht.- Sandusky to Buffalo.--When 14 miles northeast of Cedar Point light and in range of beacon, steer N. E. by E. £ E., 216 miles, to the north end of breakwater. Green Island to Bar Point.--When 1 mile south of light, steer N. W. by N. 3 N, 30 miles, to a point 1 mile N. by E. from Detroit River light, and in range with it and Bois Blanc light, pass- ing + mile west of Middle Sister island, and about 2 of a mile east of Detroit River light, Green Island to Entrance to Maumee Bay.--When 1 mile south of Green Island light steer N. W. by W. for 15 miles to a point 1 mile north of West Sister Island light, then steer W. 4 N., 132 miles, to Turtle Island Shoal buoy, or until Turtle Island light bears 8. W. by 8. 38. 18 miles. : Entrance to Maumee Bay to Pelee Spit.--When 12 miles N. E. by N. 4 N. from Turtle Island light, steer E. 4 8., 132 miles, to a point 1 mile north of West Sister Island light, thence E. by N. 4 N. for 294 miles, ranging on Peleé Spit light, and to with- in 22 miles, when steer E. by S. 2? S. for 23 miles to a point 14 miles south of Spit light. This course leads close to the north end of Middle ground. Entrance to Maumee Bay to Bar Point.--When 13 miles N. E. by N. 4 N. from Turtle Island light, steer N. EH. 3 N. 192 miles to Detroit River light. Pass it on either side. Entrance to Maumee Bay to Marblehead.--Round Turtle Island Shoal buoy, and steer E. by S. 2 S. 21$ miles to a point 1 mile north of Niagara Reef buoy, and in range of West Sister island and Green Island lights, when steer 8. E. by EK. 16 miles to a point 14 miles north of Marblehead light, passing between the buoys on Mouse Island reef and Starve Island reef. Middle Passage to Bar Point.--When 3; mile south of Middle Island light steer W. % miles, or until the west end of Middle Island bears N., when steer N. W. by W. 19 miles, until the east side of Middle Sister bears N. 14 miles, passing $ mile north