  SANTOS-DUMONT AND HIS AIR-SHIP THE LIFE-SAVERS AND THEIR APPARATUS MOVING PICTURES Some Strange Subjects and How They Were Taken BRIDGE BUILDERS AND SOME OF THEIR ACHIEVEMENTS LONG-DISTANCE TELEPHONY What Happens When You Talk into a Telephone Receiver A MACHINE THAT THINKS A Typesetting Machine That Makes Mathematical Calculations HOW HEAT PRODUCES COLD ARTIFICIAL ICE-MAKING MARCONI READING A MESSAGESTORIES OF INVENTORSThe Adventures Of Inventors And Engineers. True Incidents And Personal ExperiencesBy |
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