Dodge, Mary Mapes, 1830-1905 · [New York : Scribner & Co.] · leaf 268
over-come by using a cipher code; but even thenan enemys ship, receiving a message in an un-known cipher, would know that some vessel ofthe defending squadron was near. The worstpart of the trouble caused by the waves goingin all directions is that one set will get mixedup with other sets from… … SKETCH SHOWING HOW THE WIRE IS FASTENED TO THE MASTHEAD. station, like trying to listen to several conversa-tions at the same time. If one station is sayingc-a-t and another d-o-g, the receiving station mayget c-d-a-o-t-g, or the waves may overlap so asto turn dots into dashes and make no letters…
Children's literature
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