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78 THOMPSON'S COAST PILOT. The Lighthouse is built of wood, and painted white, and from its tower a fourth order fixed white light will be exhib- ited at an elevation of 34 feet above the level of the lake. WESTERN ENTRANCE. Range lights have also been er ected on the mainland, to guide vessels into this harbor through the west channel. The rear light is white--exhibited from the keeper's dwelling--the front light is red, and is exhibited from a small wooden tower. Both structures are painted white, the distance between them being 500 feet; steer on the range until the harbor is well open, then haul up for it. DANGERS TO BE AVOIDED. In passing through the Narrows at Sand Point, give the point a wide berth, and avoid the sand spit, which lies to the north and NW of it $ of a mile, on which there is but 5 feet water, and in passing round the SW point of Grand Island, beware of sand spits which extend nearly 4 a mile from shore, - and on which there are but 5 feet water also. There are numerous rocks and sand spits between the south point of Williams' Island and the main shore to the south of it, on which there are but 8 and 10 feet water, making it danger- ous for vessels drawing over 8 feet water, to attempt to pass between Williams' Island and the main shore. Norr.--Ranges have been erected for the east and west channels of Grand Island. FROM nee TO PORTAGE ENTRY, SIXTY-FIVE MILES, AS FOL- LOWS: INSIDE PASSAGE. Run out from the dock east-northerly until Granite Island is open with Presqu'ile Bluff (a Lighthouse has been erected on this island, and shows a fixed white light, varied by red flashes of .the fourth order of lens, elevated 93 feet above the Lake level); then haul up for the bluff, passing it close to, and leaving two or three small rocky islands to star- board, which are nearly abreast of Presqwile Bluff; then shape your course for Granite Island NWbyN, leaving it 2 miles to the northward; when abreast the island, which is 12 miles from