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THOMPSON'S COAST PILOT. 51 FROM CABOT'S HEAD TO PENETANGUISHENE, THROUGH THE CHRIS- TIAN ISLAND CHANNEL. From Cabot's Head to Christian Islands ESE#S 543 miles. In running through this channel, keep Hope Island to port, Chistian and Beckwith to starboard; and when past Beckwith Island, haul up for the mainland about ESE 6 miles, and run into Penetanguishene as directed above from Hope Island. FROM COLLINGWOOD TO PENETANGUISHENE, LEAVING THE CHRIS- TIAN ISLANDS TO THE NORTHWARD. From Collingwood to Christian Island Lightheuse NNE2N 18 miles ; tenes run the main shore from point to point, at a distance td to 1 mile, until abreast of the Giant's Tomb Island; then run in as directed above. SE ond the Lighthouse is a patch of roeks off the mtd about 2a mile. Thedepth of water in this channel is from 17 to 18 feet, until well past the Lighthouse. To make a harbor, haul up into the bay to the northward, and come to in 3 fath- oms water close in. THE DUCK ISLANDS, LAKE HURON. The Duck Islands lie NbyE#E 43 miles from Thunder Bay Island Lighthouse, U.8., and WbyN#N 63 miles from Cove Island, Ontario. There is good holding ground between the Great Duck and Outer Duck Islands. The Outer Duck is.to the eastward of the Great Duck, off the south end of it. To make a harbor, bring the passage open between the two islands, bearing NbyW2W, and haul up on that course, leaving the reef off each Island on each side, in 22 to 30 feet of water. There is 15 feet of water on the end of the Great Duck Shoal, and 11 on the Outer Duck. These two reefs run out about SSE, which makes a good lee. Run well up and past the south end of the Great Duck, and come to; anchor in any part of the bay. There are two good passages between these islands; one between the Great Duck and Middle Duck, and the other between the West Duck and Middle Duck, These passages can be plainly seen in clear weather.