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THOMPSON'S COAST PILOT. 61 St. Mary Rapids. The current is strong from Little Lake George to the Sault St. Mary Rapids. ST. MARY'S RIVER, ABOVE THE RAPIDS. After leaving the canal, at the distance of 300 yards, haul up the river, steering WhbhyS 24 miles, or until the first prominent point, called Big Point, bears south; thence SWbyW, till Point au Par bears NW ; then S W238, to a point about 500 feet off shore, and due south from the houses above Point au Par, and in the little bay, called Clark's Bay; then haul up for the woody point below the Mission, until Point Iroquois Lighthouse bears NWbyW43W; haul up on this course till the Mission House bears SW (the dock being gone ;) thence NW4N 25 miles, to White Fish Point. Note--After leaving the canal and nearly up to the first low point on the Canada side, and nearly opposite Oaks' Barn, U.S., you will run over a bar of rock with 12 to 14 feet water on it; after which the channel is clear until up to Round Island Point, when you run over another bar with 18 to 14 and 18 feet water on it. 'The course from the low sandy point beyond Clark's Bay, to the woody point below the Mission, is WSW. Opposite Point au Par a shoal makes off from the U. 8. side, about two- thirds across the river, under which will be found good anchorage in 04 fathoms, soft bottom. , From Round Island to Waiska Bay WSW 44 miles. This is a good harbor ; has a wood dock, and good holding ground in o4 fathoms. 'To go in haul close round the point and into the bay, and come to in 5 fathoms water, soft bottom. 'The little island going into Waiska Bay, on the port side is gone, and is just under water. FROM ROUND ISLAND TO POINT IROQUOIS. Haul off from Round Island to the northward and westward, so as to bring the Lighthouse on Round Island in a line with Point Iroquois ; then steer for the point or Lighthouse, keeping on this range to clear the middle ground, which you leave to port. The middle ground is in a direct line from Round Island Lighthouse to the Mission Dock. 'To leave the middle ground on your star-