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THOMPSON'S COAST PILOT, 49. - thence' to Devil River; 6 foot spot # mile to northward of Sulphur Island ; 11 foot shoal 1} miles NE of Partridge Point. Flat j in Bay west of White Fish Point ; 12 foot spot 1 milé SE of North Point. Foul ground and rocky lumps between Sugar Island and main land. Spits extending SE of Sugar Island and + mile SE of eee Bay Lire | ' | FROM THUNDER BAY TO STRAITS: OF MACKINAW. 'Shoal 3 2 mile SE ak Middle Island. Flats 4 mile from SW point, and + mile from NW point of Middle idea. A 10 foot spot + mile NW of first point below Presqu'ile Harbor; a 10 foot spot ¢ mile SE of Presqu'ile Lighthouse ; and a 5 foot spot 1 mile SE ers Adam's Point. , Note.--In running along shore from Presqu'ile, up or down, it is always better to keep the west shore pretty well aboard, say from 2 to 5 miles; and should a fog close in on you in the neigh- borhood of the turning point towards Sheboygan, you have only to keep the lead going, and after running as near as possible your dis- tance from Presqu'ile, which is 50 miles, you may safely haul up to the westward for Sheboygan Lighthouse ; after which, shape your course for Old Point Mackinaw, NWbyW+4W » miles. we Ree Ent¥arive to Straits of Mackinaw. -- FROM DETOUR TO FALSE DETOUR, A 10 foot spot 24 miles EbyS from Detour Lighthouse. De- tached shoal 1 mile from shore, and 124 miles east of Detour Light- house. Spit extending 14 miles from shore, 24 miles west of Har- bor Island. Shoal spot 3 mile SW from east -- of entrance to False Detour. | CANADIAN SHORE FROM FALSE. DETOUR TO ST. CLAIR, Magnetic reefs in Mississauga Passage. Reefs between this pas- sage and Green Island, and those around the Duck Islands. -Reef between Providence and Michael Bay, and off south point of Michael Bay. 11 foot spot in Cove Island Passage' NW from Lighthouse, distance 2 miles. Spit extending 4 mile west from Gat Point on Cove Island. Reefs extending out 3 miles between Cove Island and Capé Hurd. From Cape Hurd to the Chantry Islands the coast is 7