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54 LAKE ERIE. 14 miles above its mouth. The crib is partially enclosed for the protection of the buildings. The 12-foot curve of the bottom lies about one-fourth mile outside the pierhead; best water is found by standing in in line with the straight (inner) section of the north pier (W. N. W.4 W.). On this course 10 feet of water may be car- ried in. Width between piers, 200 feet at outer end, 100 feet inside. Sandy bottom between and outside the piers; north pier projects 140 feet beyond the south. A straight course may be made from the Raisin point buoy to the point outside for entering this har- bor. Stony point to the northward may be passed within one- fourth mile. Stony point, N. E. 4 EK, 45 miles. Point Mouille.--Black, 2d-class can buoy in 14 feet of water. Marks the end of a shoal extending 14 miles southeast from Point Mouillé; hard sand bottom. Stony point, S. W. 2 W., 6 miles. Gibraltar light-house, N. $ W., 7% miles. DETROIT RIVER LIGHT-STATION.--A fixed white for one minute, followed by six consecutive white flashes, at inter- vals of 10 seconds; 4th order, visible 14 miles. Brown, iron, circu- lar tower, lantern black. Focal plane 45 feet above the level of the lake. On a masonry pier, in 28 feet of water. There is also onthe ~ pier a fog signal-house, of corrugated iron, the same color as the tower. During thick and foggy weather there will be sounded at. this station a 10-inch steam fog-whistle, giving a blast of 5 seconds' duration, followed by an interval of 25 seconds. Bois Blanc light, N. by E., 64 miles. Monroe light, 8S. W. # W., 122 miles. West Sister light, S. $ E., 18} miles. North side of Middle Sister, 8. E. £S., 122 miles. Vessels entering Detroit river should keep on the range joining the Detroit River and Bois Blanc lights until within 14 miles of Bois Blanc light, when steer N. by E.? E. The range between the two lights leads about 250 yards east of the 13-foot spot marked with ared buoy, bearing 8S. by W. 4 W., 3g miles from - Beis Blane light. | Compass Courses and Distances on the South Shore of Lake Erie. Buffalo to Long Point and Pelee Spit.--When at the north end of breakwater, steer W. by 8.275S., 632 miles, to a point 2 miles south of Long Point light, thence W. by S. 38., 134 miles, to a point 14 miles south of the Spit light. Buffalo to Erie.-- When at the north end of breakwater steer S. W. ? W., 763 miles, to a point 13 miles northeast from Presque Isle beacon-light. Buffalo to Fairport.-- When at the north end of breakwater, steer S. W. by W.3 W., 143 miles, toa point 24 miles north of Fair- port beacon-light.