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178 ; LAKE MICHIGAN. Morgan's Reef (outside).--Black spar buoy in 13 feet of water. Marks the east side of Morgan's reef, off the city of Chicago. Hyde Park hotel, 8. W. 4 W., 1 mile. Chicago Breakwater light-station (South), N. N. W., 4¢ miles. Morgan's Reef (inside).--Red spar buoy in 12 feet of water. Marks the west side of Morgan's reef, off the city of Chicago. There is but 12 feet of water in the channel to the westward of this buoy. East end of Casino pier, 8. 8. E. 2 E., 2 miles. Chicago Breakwater light station (South), N. by W. $ W. 4¢ miles. Oakland Shoal.--Black 2d class nun buoy in 26 feet of water. Marks the easterly end of Oakland shoal, off the city of Chicago. Chicago Water Works crib (4-mile), N. N. E. { E., 33 miles. Douglas monument, N. W. by W. ¢ W., 14 miles. Oakland Shoal (inside).--Red spar buoy in 16 feet of water. Marks the westerly edge of Oakland shoal, off the city of Chicago. Chicago Water Works crib (4-mile), N. E. | N., 4,3, miles. Douglas monument, N. W. 3 W., 1 mile. Chicago Water Works Crib (4-mile),--A fixed white light shown from an iron frame-work tower, supporting a black lantern on a circular stone crib, sur- , mounted by a sheet iron structure, painted brown. A course steered from the Chicago Water Works crib (4-mile) to the Hyde Park Water Works crib (outer), leads to the east of Hyde Park and South Park shoals, clearing 4 and 53, of a mile respec: tively; and from the Chicago Water Works crib (2-mile) to Hyde Park Water Works crib (inner), leads between Hyde Park outer and inner shoals and between Madison Park and South Park shoals, clearing South Park shoal , of a mile. Hyde Park Water Works crib (outer) 8. 3 E., 53 miles. Chicago Breakwater light-station (south) W.4N., 38 miles. Chicago Water Works crib (2-mile) E. 8 N., 14 miles. Hyde Park Water Works crib (inner) 8. by E, + E., 6,5, miles. Chicago Breakwater Beacon-Light (south).--A fixed red light, 5th order, visible 10 miles. White, open framework tower, 30 feet high. On the north side of the southern opening in the breakwater forming the outer harbor of Chicago, The breakwater commences on the south side of the entrance into the Chicago river, and extends S. # E. 1,680 yards, and has an opening 250 yards in width, 83 yards from its southern end, where it turns toward the shore, extending 680 yards in a S. W. by 8. 38. direction, protecting the harbor from southeasterly gales. There is also an entrance, 250 yards wide, from the river into the harbor on its north side. The area enclosed is 455 acres, between the dock line (which is 2,000 feet west of the breakwater and parallel to it) and the breakwater there is an area of 270 acres, which is dredged to a depth of 16 feet. To enter the harbor from the southward, bring the southern breakwater light to bear west, or nearly so and steer in through the open- ing, and as you pass the beacon haul up to the northward for an anchorage close to the breakwater. Chicago light-house, N. by W. # W., seven-eighths of a mile. Randolph Street Viaduct.--Red and black, horizontal stripes, spar buoy in 16 feet of water. Marks a wreck in Chicago harbor, near Randolph street viaduct, with but 74 feet of water over it. Chicago Breakwater Beacon-light (north).--A fixed white light, lens-lantern, visible 5 miles. Shown from a white post 19 feet high. On the north- east angle of the breakwater, and the south side of the entrance into the harbor. A guide into the river. Chicago light-house, W. N. W. 4 W., 404 yards. _. Chicago Pierhead Beacon-light.--A fixed white light, 4th order, vis- ible 12 miles. White, open frame-work tower, 27 feet high. About 40 feet from the end of the north pier at the entrance into the Chicago river. The width between the piers at the entrance into the river is about 500 feet, and narrows as you ascend the river. The north pier extends out into the lake beyond the breakwater about 200 yards. During thick and foggy weather, there is sounded a fog-bell, struck by machinery at intervals of 20 seconds, double and single blows alternately. Direction of piers, east. Chicago light-house, W. 3 8., 525 yards. Chicago Water Works crib, N. E. 3 N., 2,900 yards. Southeast end of outer breakwater, N. E. by E.} E., 1,717 yards. Range Light.--A fixed red light, shown from a tubular lantern on a post 30 feet above the lake level. On outer end of the north pier. This light will form with the pierhead light a range showing the direction of the pier, and the course for cntering the harbor. 3 3 _ CHICAGO HARBOR LIGHT-STATION.-- A flashing red and white light alternately every 10 seconds; 3d order, visible 16 miles; light 674 feef above lake level; conical iron tower, painted red with black trimmings, standing on a rec-