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LAKE MICHIGAN. | | 179 tangular rock-faced masonry pier, inside of and near the southeast extremity of the outer breakwater. A coast and harbor light. Fog-signal building alongside of tower. During thick and foggy weather a 10-inch steam whistle sounds blasts of 5 seconds' duration, followed by a silent interval of 25 seconds. | The Harbor Improvements at Chicago consist of an outer harbor ad- joining the entrance to the Chicago river, on the south side; and a harbor of refuge, protected by the new breakwater, affording good anchorage in deep water, and safe access to the outer harbor and mouth of the river. The New Breakwater, now completed is about midway between the Chicago Water Works Inlet crib and the outer end of the north harbor pier. Com- mencing at a point 4,958 feet N. 2 W. from the Chicago Pierhead beacon-light in about 21 feet of water, it is projected ina S. E. by E. ? E. direction 5,486 feet, and terminates in 82 feet of water. The outer end bears from the Pierhead beacon-light N.E. by E. + E., 5,200 feet, orabout 1 mile. From the outer end of the breakwater the Water Works Inlet crib bears N. # E., 4,350 feet. Making the harbor from the north and east, pass to the eastward of the Water Works crib, keeping nothing to the west -- of south until the North Pierhead beacon bears W.8. W., and then run for the entrance, Approaching along the land from the northward and intending to pass between the western end of the breakwater and the shore, bring the North Pierhead beacon to bear S. by E., and run through on that course. : wx CRIB -1| ! i YU a YA" |" -- a WIN WW NW Nis ISS CHICAGO. Chicago Outer Breakwater Light.--A fixed white lens- lantern light on a post 45 feet above lake level. On auxiliary intake crib. Marks inshore end of new breakwater. Chicago Water Works Crib.--A fixed white light on the Water Works crib, 4,350 feet N. ? E., from east end of outer breakwater. During thick and foggy weather a bell is struck by machinery about 12 times every minute. The station is maintained by the city of Chicago. Lakeview Water Works Crib (outer) Building.-- Chicago Water Works crib 8. by E. § E. 4 miles. Outer breakwater (northwest end) S. 4 E. 44 miles. Lakeview Water Works Crib (inner) Building.--Lakeview Water Works crib (outer) E.4N.,2mile. Chicago Harbor light-station 8S. by E. ¢ E., 5 miles.