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THOMPSON'S COAST PILOT. 37 FROM PLUM ISLAND TO SAND POINT, LITTLE BAY DE NOC. From Plum Island to a point 3 miles west of Point Peninsu- lar, and 'in mid-channel, steer NW 27 miles; thence same course 6 miles to Sand Point. From Buoyer's Bluff to Sand Point N?W 24 miles. From Rock Island Lighthouse to Sand Point NNW 25 miles. From Green Island to a point 8 miles west of Point Penin- sular NNEZE 49 miles; thence NW 6 miles to Sand Point. This course brings you close to Chamber's Island. From the anchorage off Menomonee River to a point 3 miles west of Point Peninsular NEZN 493 miles. | POVERTY ISLAND CHANNEL. There is a good deep channel on both sides of Poverty Island. To enter the south channel keep midway between Poverty and - - Gull Islands, and after passing Poverty Island haul up for Little Rock Island, keeping Big or Burnt Bluff closed in behind Little Rock Isiand. On this route you will pass over a shoal with 4 to 5 fathoms water on it. There are several patches of shoal 'water lying between this shoal and the North Gull or Gravely Island, so that by keeping well to the northward you avoid all danger, | | A Lighthouse is to be erected on Poverty Island as a guide for these channels. To enter Green Bay by the north channel, open Poverty with Big Summer's Island, and run straight in, keeping Poverty best aboard; thence for Little Rock Island, giving it a berth of of a mile. , The channel between Point Detour and Big Summer's Island is difficult to run, being crooked and shallow, and requires a good pilot, the depth of water being only 10 to 12 feet, and rocky. FROM CHICAGO TO GREEN BAY BY DEATH'S DOOR. _ From Chicago to Pilot Island Lighthouse N3$E 245 miles; bring Plum Island Lighthouse to bear NW, and run through the passage, leaving Pilot Island to the starboard ? ofa mile; and when'abreast of Plum Island, steer WNW, until you open 6