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92 ST. LAWRENCE RIVER. deep water, 40 yards from the curved corner of the shoal. Ogdensburgh light-house, S. 4 E., 600 yards. West Yntravce. No. 2.--Red spar buoy, in 12 feet of water, marks the upper side of the entrance, and the outer point of the shoal on that side. peceneperg" light-house, S. 3 E., 470 yards. North end of steam elevator, E. # N. Light-house Buoy, No. 4.--Red spar buoy in 12 feet of water, in the channel, close to the steep, west bank, and nearly opposite the light-house. A straight course may be made from this buoy to the lower corner of the R., W. & O. R. R. wharf, on the west side of the river. Ogdensburgh light- -house, northeast corner of tower, 8S. W.by W. East Buk buoy, E. 2 N., 200 feet. East Bank Buoy, No. 3.--Black spar buoy, in 12 feet of water, on the east side, a inside the light-house buoy. Ogdensburgh light- house, S. W. by W. 2 W. Lower corner of R., W. & O. R. R. wharf, S. by E. § E. | Inner Buoy, No. 5.--Black spar buoy in 13 feet of water, east side of channel at the inner end. Stands 25 yards off the 10-foot point of the shoal. Passing it, the wharves on either side of the harbor may be steered for. From this buoy the shoal trends E. by 8S. $8., 90 yards, (half-way to shore,) to the entrance to the channel nleag the north front of the city. Ogdensburgh light-house, W. N. W., 270 yards. Lower corner of R., W. & O. R. R. wharf, 8. § E., 140 yards. Channel South of Brock's Group, standing up the St. Lawrence River. This channel is buoyed for 12 feet draught of water. Sailing Directions.--Good anchorage in from 8 to 7 fathoms, soft bottom throughout the channel, the best abreast or just above the Lower buoy, and on the edge of the bight of the south shore opposite the Upper buoy ; except at ; these points, the bottom, in three fathoms or less, is generally rocky. Approaching from below, pass (on about a S. W. 4S. course) south of Macnair's islands, and the island near the American shore, 1} miles above, giving the latter a berth of at least 100 yards, (the opposite shore is bold ,) and steer for the Lower buoy of this channel, thence for Middle buoy, Foul-Ground buoy, and Upper buoy in turn. From Upper buoy steer for Mid-Channel Reef buoy. Lower Buoy.--Red spar buoy, 25 feet long in 16 feet of water, on north side of entrance to channel. Stands in soft bottom, and marks the southeast point of a 9-foot shoal 400 yards long. The ranges from this buoy to the North Shoal buoy and to the end of the Brockville wharf clear the south and east edges respectively of this shoal. Shoal water extends from the south shore nearly half-way, or to within 300 yards of this buoy. Steer for the Middle buoy, passing the North Shoal buoy to the southward ; the point of the south shore opposite the latter buoy should be given a berth of at least 100 yards. It is cleared by the range between the Lower and Middle buoys, (S. W. by W.% W., 12 miles). East end of lower island, north ide of channel, W. N. W. 4 We mile. South end of island, 4 mile below channel, N. E: by E. North hoal buoy, W. by S. 48. a mile.