THE ELECTRON
Reading edition
ITS ISOLATION AND MEASUREMENT AND THE DETERMINATION OF SOME OF ITS PROPERTIES
BY
Robert Andrews Millikan
Formerly Professor of Physics, the University of Chicago Director Norman Bridge Laboratory of Physics California Institute of Technology
THE UNIVERSITY OF CHICAGO PRESS CHICAGO, ILLINOIS
COPYRIGHT 1917 BY THE UNIVERSITY OF CHICAGO All Rights Reserved Published August 1917 Second Impression February 1918 Third Impression November 1918 Fourth Impression December 1910 Fifth Impression February 1921 Second Edition October 1924
Composed and Printed By The University of Chicago Press Chicago, Illinois, U.S.A.
TO ALBERT A. MICHELSON AND MARTIN A. RYERSON THIS SMALL OUTGROWTH OF THEIR INSPIRATION AND GENEROSITY IS RESPECTFULLY DEDICATED