University of Virginia Library

EDISON
HIS LIFE AND INVENTIONS

IN TWO VOLUMES

ILLUSTRATED

VOL I

BY

FRANK LEWIS DYER

GENERAL COUNSEL FOR THE EDISON LABORATORY AND ALLIED INTERESTS AND

THOMAS COMMERFORD MARTIN

EX-PRESIDENT OF THE AMERICAN INSTITUTE OF ELECTRICAL ENGINEERS
NEW YORK AND LONDON
HARPER & BROTHERS PUBLISHERS
1910 Copyright, 1910, HARPER & BROTHERS Published November, 1910. Printed in the United States of America