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\ SCOTT'S NEW COAST PILOT. |. CHANGES AND ADDITIONS. 'CORRECTED TO OPENING OF NAVIGATION, 1899. oF. LAWRENCE RIVER, Lower Narrows Gas Buoy.--Moored in 16 feet of water and is not numbered. Off the southeast end of a small shoal 250 feet from the Canadian shore, near the upper end-of the narrows, west of Brock group. The color of this buoy is red, and it shows a fixed white light varied with a white flash every 10 seconds. The best channel is south- east of the buoy. Depth in Ogdensburg Harbor. -- Dark Island and Blind Bay shoals have been deepened to 18 feet. From deep water of the St. Lawrence river, through the upper entrance of Ogdensburg harbor, to the mouth of the Oswegatchie river, there is a depth of 15 feet at zero of Oswego water gauge, or when the water is 1% feet below zero of Ogdensburg water gauge. The channel is from 100 to 200 feet wide. From the mouth of the Oswegatchie river'up to the bridge, the depth is not less than 14 feet in a channel 60 feet wide on each side of the river, keeping 25 to 40 feet off the wharves and up to the elevator on the west side, and keeping 10 feet off the wharves up to the coal wharf on the east side. From the mouth of the Oswegatchie river the depth is not less than 12 feet along the entire St. Lawrence front of Ogdensburg to the lower entrances. Through the two lower entrances, the depth is 16 feet to the channel along the wharves. In that channel along the wharves, between the middle and lower entrances, and along the elevator wharf, there is a depth of 15 feet; and from the middle entrance to Elizabeth street the channel is not less than 14 feet deep. Round Island Shoal--Discontinuance of Buoy.--The 25-foot spar buoy, painted in red and black horizontal stripes, which has heretofore marked Round Island shoal, St. Lawrence river, will be dis- continued, as no longer required, the shoal which it has marked (Round or Dark Island shoal) having been removed by dredging to a depth of 18 feet at low water. =