The Age Of Electricity........................................................................................................ 3 Edison's Pedigree ................................................................................................................ 7 Boyhood At Port Huron, Michigan................................................................................... 13 The Young Telegraph Operator ........................................................................................ 24 Arduous Years In The Central West................................................................................. 31 Work And Invention In Boston......................................................................................... 45 The Stock Ticker............................................................................................................... 52 Automatic, Duplex, And Quadruplex Telegraphy............................................................ 63 The Telephone, Motograph, And Microphone ................................................................. 77 The Phonograph ................................................................................................................ 92 The Invention Of The Incandescent Lamp ..................................................................... 112 Memories Of Menlo Park ............................................................................................... 127 A World-Hunt For Filament Material............................................................................. 141 Inventing A Complete System Of Lighting .................................................................... 150 Introduction Of The Edison Electric Light ..................................................................... 163 The First Edison Central Station..................................................................................... 179 Other Early Stations--The Meter .................................................................................... 194 The Electric Railway....................................................................................................... 208 Magnetic Ore Milling Work ........................................................................................... 219 Edison Portland Cement ................................................................................................. 233 Motion Pictures............................................................................................................... 242 The Development Of The Edison Storage Battery ......................................................... 253 Miscellaneous Inventions................................................................................................ 263 Edison's Method In Inventing ......................................................................................... 274 The Laboratory At Orange And The Staff...................................................................... 290 Edison In Commerce And Manufacture ......................................................................... 304 The Value Of Edison's Inventions To The World .......................................................... 315 The Black Flag................................................................................................................ 327 The Social Side Of Edison.............................................................................................. 344 APPENDIX..................................................................................................................... 363 PATENTS ....................................................................................................................... 439