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i \ 12 CHANGES AND ADDITIONS. BIG BAY POINT LIGHT-STATION.--Fixed white light varied by a white flash every 20 seconds, third order, visible 183 miles. The light will illuminate 270° of the horizon and will be visible from all points of approach from the lake. The focal plane of the light is 108 feet above mean lake level. The light will be shown from a black lan- tern surmounting an octagonal watch room on a square red br ick tower, rising in the center of the front of a double red-brick dwelling, with red roof. Stannard Rock light- ae NE. 4 N., 32 miles; Granite Island light-house, SE. by E. 4 E., 154 miles; Huron Island light- -house, NW. by W..8 Wi, 172 ae aids thick or foggy weather a 10-inch steam Wilatle will sound. blasts of 3 seconds? duration separated by silent in- tervals of 17 seconds, thus: Silent Silent Blast interval Blast interval 8 sec. 17 sec. 3 sec. 17 sec. | The fog signal house stands about 350 feet NW. ? W. from the light tower, on the lower level of land, about 25 ep "above the water and about 28 feet below the light- chouse site. It is a red-brick str ucture, with red corrugated iron roof. A Coast Light on Big Bay Point, east ve of the entrance to Big Bay, south side of Lake Porener