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86 THOMPSON'S COAST PILOT. Grand Island light, fixed, varied by flashes, visible 18 miles, on the north point of Grand Island. This Lighthouse is the highest on the lakes, being 236 feet above the level of the lake. The highest part of the island is 300 feet above the level, Marguette light, fixed, visible 10 miles, on the north point of Marquette Harbor. There are several small patches of rock close off the point, just awash, and due east of the peint. SH from the Lighthouse, in 63 to 7 fathoms water, you will find soft bottom. Good anchorage in the bay in 3% fathoms. Granite Island. A Lighthouse has been built on this island, also one on the West Huron Island. Portage Entry light, fixed, varied by flashes, visible 13 miles, on Portage Point, near the mouth of Portage River or Entry, western shore of Kewawena Bay. Good holding ground under the point in 2¢ to 35 fathoms. This harbor is under improve- ment, and will be one of the best on the south shore. The cut is through the sandy point into the river. The pier.is on the east side of the cut, with nothing less than 12 feet water; and the other improvements are up the river, by cutting across flat points to straighten the channel. After getting into Portage Lake, the course is Nby WW, to the turning point below the city; keep the middle of the river after hauling round the ~ point, and run up to the docks. A Lighthouse is to be built at the entrance to Lac la Belle, and a Lighthouse has been erected on Gell Island, west of Man- itou Island. : Manitou Island light, revolving, siuthle 14 miles, on Manitou Island, 4 miles from Point Kewawena. Copper Harbor light, fixed, visible 10 miles, at the east end of Copper Harbor. Rock Harbor light, fixed, visible 14 miles, on the NE end of Isle Royale, on west side of entrance to the harbor, 12 miles from the eastern. extremity of the island. There is a passage inside from the bay to the east end of the island, formed by a number of small islands, the whole way to Blake's Point, 12 miles, with three or four passages thr ough into the lake. First- rate holding ground in the bay, SW of the Lighthouse, in 10 to 15 fathoms water, mud bottom. (Light discontinued.)