78 THOMPSON'S COAST PILOT. passing 4 mile south of Middle Sister Island, to strike the route from Monroe to Point Pelee ; thence on that route 17 miles, to the turning point of Point Pelee. 3 Variation of compass, 2° 20' E. DETROIT RIVER. FROM BAR POINT, LAKE ERIE, TO WINDMILL POINT LIGHTHOUSE, LAKE ST. CLAIR. In running up the north channel for the entrance to Detroit River, keep the shore along from Little's Point in 3 to 34 fathoms water until well up to Bar Point, when you may run with safety in 24 to 24 fathoms until Bois Blanc Lighthouse opens; you will then _ drop into 4 to 44 fathoms water, with the Lighthouse bearing N2E. (There is a red buoy kept off Bar Point in 12 feet water.) Haul up for the Lighthouse, keeping it a little to port, (and note that at the distance of 24 miles SW of Bar Point, on the range, you will have Gibraltar light open with Citron Island, ) and run up, keeping the low point under the Lighthouse bluff pretty close to; when up to it, take the middle of the river. The starboard or east shore can be run in a straight line with it in 2+ fathoms, if necessary; but as you approach the foot of the Island, haul off to port for the middle of the river; when up to head of Bois Blanc Island, keep it best aboard to clear the flat which sets off Fort Malden, where there is ared buoy; after passing the buoy, steer for the lime kilns on the Canada shore, to clear a flat rock with 5 feet water on it, a little below the lime kilns and SE from Stony Island. There is gene- rally a buoy at the north and south end of this shoal. When abreast the lime kilns, run the shore along pretty close to untli nearly up to the rock which lies off 875 feet from the shore, and directly opposite the gate of McDougall's fence, and the large brick building ; thence run across the river, steering NNW until you range Mamajuda Lighthouse with Grassy Island Lighthouse ; then haul up for Mamajuda, keeping on the range until well up to it; pass it close to and run for Grassy Island Lighthouse, and as you approach it, give it a berth of 200 yards, or just clear the