Depths shown by bathymetric soundings. Latitudinal and longitudinal lines. Prime meridian: London. Coordinates approximate and based on Greenwich meridian. Shows telegraph line between Newfoundland and Ireland, as well as the steamship routes between America and Europe. Decorative border. Tables: Overland telegraphs of the world -- Submarine telegraphs of the world. Texts: Account of the invention and operation of the magnetic telegraph -- Decription of making and laying submarine telegraph cables. Several woodcut illustrations of telegraph machinery (signed: Forbes & Bond ; Wilson N.Y. and Tuttle Eng.), as well as two portraits: Cyrus W. Field, the hero of the enterprise -- Prof. Samuel F. B. Morse. Profile view: Profile of the Atlantic Ocean on the Telegraph Plate, showing the depth in fathoms.
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