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Map showing the Condition of the Coast Surveys of the World
has been attained in the portrayal of the forms and characteristics of the strip of the sea bottom which borders the coast than is yielded by measurements ob- tained by dropping a sounding-plummet at close intervals, and that nearly all coasts and harbors, whatever may be the initial completeness of the surveys, re- quire reexamination in the course of time to disclose the altered conditions that are produced by natural agencies and artificial developments.
It will not escape attention that while there is a comparatively small total extent of completely surveyed coast which bounds the world's seats of enlightenment and wealth in the Northern Hemisphere, the extent of coast that is unex-
