The following text may have been generated by Optical Character Recognition, with varying degrees of accuracy. Reader beware!

42 THOMPSON'S COAST PILOT. THE STRAITS OF MACKINAW AND MICHILIMACKINAC, FROM DUNCAN DOCK OR SHEBOYGAN BAY TO POINT WAUGOSHANCE © LIGHTHOUSE, THIRTY- FIVE MILES, AS FOLLOWS / _ From the dock north 14 miles ; thence NWbyWiw 16 miles, to vai of Old Mackinaw, about 2 mile from the land ; and note that this course is the range line from Sheboygan Lighthouse to: Bt. Helena ; thence W4S 174 miles, to Waugoshance Lighthouse, which may be approached to within 4 mile. This route passes $ mile north -- of the bold shore at McGulpin's Point. © | , | FROM MACKINAW TO POINT WAUGOSHANCE LIGHTHOUSE, THIRTY-EWO ° MILES AND A HALF, AS FOLLOWS ; From the middle of Mackinaw Harbor WhyS88 44 nee so as to shut in Rabbit's Back Peak, behind Point St. Ignace; thence -- W48.19 miles, to Waugoshance Lighthouse, making it ahead and leaving the height of Round Island dead astern. This route passes. 4. mile south of the reefs off Point St. Ignace, sometimes called the | Graham Shoals, the most southerly one being well indicated by the: following range lines, viz.: a line from Grose Point to St. Ignace, and a line from the NE side of St. Helena to Point la Barb. TO MAKE A HARBOR AT ST. HELENA. | From Old Mackinaw NWbyWiW 6 miles, leaving Point la Barb at a distance of 12 miles to starboard, and the island to. port; haul round the NE point of the island, giving it a good berth, and come to in the bay to the northward . the dock, in, from 5 to 9 fathoms water;. soft bottom. TO LEAVE ST: HELENA NORTH ABOUT. Haul close round the NW end of St. Helena, and steer: WhbySéS 3 miles, to clear a shoal which lies due west from the island. This shoal can be passed on either hand, and has from 8 to 15 feet water on it.. WSW4S takes you to Point. Waugoshance Lighthouse. " - FROM MACKINAW TO THE DETOUR PASSAGE, THIRTY-SIX By cage AS FOLLOWS: From Mackinaw Harbor east 94 miles, to a point 2 miles north