Russell Doubleday

Stories of Inventors Russell Doubleday

How Guglielmo Marconi telegraphs without wires.-Santos-Dumont and his air-ship.-How a fast train is run.-How automobiles work.-The fastest steamboats. -The life-savers and their apparatus.-Moving pictures; some strange subjects and how they were taken.-Bridge builders and some of their achievements.-Submarines in war and peace.-Long-distance telephony; what happens when you talk into a telephone receiver.-A machine that thinks; a type-setting machine that makes mathematical calculations.-How heat produces cold; artificial ice-making.