1873--Janney Automatic Car Coupler. Oleomargarine patented in United States by Mege. 1874--Edison’s Quadruplex Telegraph. Gorham’s Twine Binder for Harvesters. Barbed Wire Machines. St. Louis Bridge finished. 1875--Lowe’s patent for Water Gas (illuminating gas made from water). Roller Mills and Middlings Purifier for making flour. Gallium discovered by Boisbaudran. Pictet Ice Machine. Gamgee’s Skating Rinks. First Cash Carrier for Stores. 1876--Alexander Graham Bell’s Speaking Telephone. Hydraulic Dredges. Cigarette Machinery. Photographing by Electric Light by Vander Weyde. Edison’s Electric Pen. Steam Feed for Saw Mill Carriages. Introduction of Cable Cars by Hallidie. 1877--Phonograph invented by Edison. Otto Gas Engine. Jablochkoff Electric Candle. Sawyer-Man Electric Lamp. Berliner’s Telephone Transmitter of variable resistance (pat. Nov. 17, ’91). Edison’s Carbon Microphone (pat. May 3, ’92). Discovery of Satellites of Mars by Professor Asaph Hall, and its so-called Canals by Schiaparelli. Liquefaction of Oxygen, Nitrogen and Air by Pictet and Cailletet. 1878--Development of Remington Typewriter. Edison invents Carbon Filament for Incandescent Electric Lamp. Gelatino-Bromide Emulsions in Photography. Ytterbium discovered by Marignac. Birkenhead Yielding Spinning Spindle Bearing. Gessner Cloth Press. 1879--Dr. Siemens’ Electric Railway at Berlin. Mississippi Jetties completed by Capt. Eads. Samarium discovered by Boisbaudran, Scandium by Nilson, and Thulium by Cleve. The Lee Magazine Rifle. 1880--Faure’s Storage Battery. Eberth and Koch discover Bacillus of Typhoid Fever, and Sternberg the Bacillus of Pneumonia. Edison’s Magnetic Ore Concentrator. Greener’s Hammerless Gun. Rabbeth Spinning Spindle patented. 1881--Telegraphing by Induction by Wm. W. Smith. Blake Telephone Transmitter. Reece Button Hole Machine. Rack-a-rock (explosive) patented. 1882--Bacillus of Tuberculosis identified by Koch, and Bacillus of Hydrophobia by Pasteur. St. Gothard Tunnel opened for traffic. 1883--Brooklyn Suspension Bridge Completed. 1884--Antipyrene. Mergenthaler’s first Linotype Printing Machine invented. Bacillus of Cholera identified by Koch, Bacillus of Diphtheria by Loeffler, and Bacillus of Lockjaw by Nicolaier. 1885--Cowles’ Process of Manufacturing Aluminum. First Electric Railway in America installed between Baltimore and Hampden. Neodymium and Praseodymium discovered by Welsbach. Welsbach Gas Burner invented. Blowing up of Flood Rock, New York Harbor. “Bellite” produced by Lamm, and “Melinite” by Turpin. 1886--Graphophone invented. Electric Welding by Elihu Thomson. Gadolinum discovered by Marignac, and Germanium by Winkler. 1887--McArthur and Forrest’s Cyanide Process of Obtaining Gold. Tesla’s System of Polyphase Currents.