. The home auxiliary and reference for teachers and students. o which teleg-raphy without wires has up to the pres-ent time been put is communicatingfrom ship to ship at sea, or betweenlightships and lighthouses; which notonly adds to the convenience of navi-gation, but renders it more safe. Practical use has not yet been madeof the telautograph, which is the namegiven to the apparatus for the trans-mission of sketches and drawings bywire. The most successful of these in-ventions is that of Elisha Gray, of Chi-cago, which was put to practical useby the Chicago Times-Herald, on June22, 1895. Us
. The home auxiliary and reference for teachers and students. o which teleg-raphy without wires has up to the pres-ent time been put is communicatingfrom ship to ship at sea, or betweenlightships and lighthouses; which notonly adds to the convenience of navi-gation, but renders it more safe. Practical use has not yet been madeof the telautograph, which is the namegiven to the apparatus for the trans-mission of sketches and drawings bywire. The most successful of these in-ventions is that of Elisha Gray, of Chi-cago, which was put to practical useby the Chicago Times-Herald, on June22, 1895. Using the ordinary telegraphwires, the Times-Herald was enabledto receive exact facsimilies of letterswritten in Cleveland by men in attend-ance at the national convention of Re-publican clubs. The fact that teleg-raphic sketches have not since comeinto general use shows that the telau-tograph has not yet reached a condi-tion of real usefulness. An inventioncalled the Telegraph Pen, devised by Cooper, of England, is somewhatsimilar, though less The /t^OnSE TElc&nRPH jr^STFUM-i ^ /rn^/^Pr-^ _ TKUTMPH OF FAITH AND GENIUS GEOGRAPHY AND ACHIEVEMENTS—COMMUNICATION 513 Even before Morse had succeeded inobtaining connection between Baltimoreand Washington, inventors were atwork upon methods for estabHshingcommunication through bodies ofwater as well as over stretches of two banks on the Hoogly Riverin India had been connected as earlyas 1839 by a Mr. OShaughnessy, whomade use of an insulated wire plungedinto the stream. Wheatstone proposedto connect Dover and Calais by sub-marine telegraph cable in 1840, but itwas ten years before the plan wasrealized, and then the cable broke, aftertransmitting only a few signals. In1851 a new cable was laid. The devel-opment of submarine telegraphy waschiefly delayed by the difficulty of devis-ing protection and insulation for thewire. Gutta-percha was used for thispurpose in 1848, and the cable was laidacross the Hudson Riv
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Keywords: ., bookcentury1900, bookdecade1910, bookidhomeauxiliar, bookyear1915
