. Bulletin. Science. Figure 42.—American telegraph office {top) and operating room of the mid-19th century. From T. Shaffner, The Tele- graph Manual, New York. 1859, pp. 459, decade before they went out of service, and by then others had been laid. In addition to the submarine cable system, the land telegraphic system was also growing. By 1865 there were 16,000 miles of telegraph lines in Great Britain, 64,000 miles in France, and 28,000 miles in Prussia. In the United States the Civil War had interfered with the normal economic growth of business, but by the end of the war the three lar
. Bulletin. Science. Figure 42.—American telegraph office {top) and operating room of the mid-19th century. From T. Shaffner, The Tele- graph Manual, New York. 1859, pp. 459, decade before they went out of service, and by then others had been laid. In addition to the submarine cable system, the land telegraphic system was also growing. By 1865 there were 16,000 miles of telegraph lines in Great Britain, 64,000 miles in France, and 28,000 miles in Prussia. In the United States the Civil War had interfered with the normal economic growth of business, but by the end of the war the three largest telegraph com- panies in the country had 83,000 miles of telegraph lines. (See figs. 42-45.) In spite of the tens of thousands of miles of telegraph lines in the world, there never were enough to satisfy the ever-growing need for improved communications. Inventors sought to devise various multiple telegraph systems''' by which a number of messages could be 3' George B. Prescott, Electricity and the Electric Telegraph, New York, 1888, 2 vols. pp. 769-918. PAPER 29: DEVELOPMENT OF ELECTRICAL TECHNOLOGY IN THE 19TH CENTURY: II 307. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Smithsonian Institution; United States. Dept. of the Interior; United States National Museum. Washington, Smithsonian Institution Press, [etc. ]; for sale by the Supt. of Docs. , U. S. Govt Print. Off
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