University of Virginia Library

CONTENTS

• XIX. MAGNETIC ORE MILLING WORK. . . . . . . . . . . . . . 473
• XX. EDISON PORTLAND CEMENT . . . . . . . . . . . . . . . .506
• XXI. MOTION PICTURES. . . . . . . . . . . . . . . . . . . 527
• XXII. THE DEVELOPMENT OF THE EDISON STORAGE BATTERY . . . 551
• XXIII. MISCELLANEOUS INVENTIONS . . . . . . . . . . . . . 573
• XXIV. EDISON'S METHOD IN INVENTING . . . . . . . . . . . .596
• XXV. THE LABORATORY AT ORANGE AND THE STAFF . . . . . . . 629
• XXVI. EDISON IN COMMERCE AND MANUFACTURE . . . . . . . . .660
• XXVII. THE VALUE OF EDISON'S INVENTIONS TO THE WORLD . . .682
• XXVIII. THE BLACK FLAG . . . . . . . . . . . . . . . . . .706
• XXIX. THE SOCIAL SIDE OF EDISON. . . . . . . . . . . . . .741
• APPENDIX . . . . . . . . . . . . . . . . . . . . . . . . .785
• LIST OF UNITED STATES PATENTS. . . . . . . . . . . . . . .943
• FOREIGN PATENTS. . . . . . . . . . . . . . . . . . . . . .971
• INDEX. . . . . . . . . . . . . . . . . . . . . . . . . . .973