About this book
PHILADELPHIA Published by the Institute, at the Hall, 15 South Seventh Street
The Franklin Institute
of
DEVOTED TO SCIENCE AND THE MECHANIC ARTS
Edited by R. B. OWENS, E.E., M.A., D.Sc., F.R.S.C.
ASSOCIATE EDITORS:
Brig. Gen. James Allen Harry F. Keller, Ph.D.
C. P. Steinmetz, Ph.D.
Wilder D. Bancroft, Ph.D. Gaetano Lanza, C.E.
S. W. Stratton, Sc.D.
John J. Carty Ralph Modjeski, D.Eng.
Naval Con. D. W. Taylor
A. S. Cushman, Ph.D. L. A. Osborne, M.E.
S. M. Vauclain, Sc.D.
Louis Duncan, Ph.D. Albert Sauveur, B.S,
R. S. Woodward, Ph.D.
W. J. Humphreys, Ph.D. Edgar F. Smith, Ph.D.
A. F. Zahm, Ph.D.
Harry C. Jones, Ph.D.
Lt. Col. Geo. O. Squier, Ph.D.
COMMITTEE ON PUBLICATIONS:
Louis E. Levy, Chairman
George A. Hoadley W.C.L. Eglin
E. H. Sanborn
Vol. CLXXX
JULY, 1915
No. 1
Contents
Control and Protection of Electric Systems. By Charles Proteus Steinmetz
1
Biochemical and Engineering Aspects of Sanitary Water Supply. By George
W. Fuller.
17
A Relation Concerning the Distribution of an Electrolyte between Water
and Some Second Solvent and its Dissociation Constant in Aqueous
Solution. By Henry Jermain Maude Creighton
63
Conditions Affecting the Success of Main Line Electrification. By W. S.
Murray. (Discussion).
75
Notes from the U. S. Bureau of Standards:
A Study of the Quality of Platinum Ware
101
A Direct-reading Device for Use in Computing Characteristics of Vacuum Tungsten
Lamps.
102
Construction of Primary Mercurial Resistance Standards
104
The Franklin lastitute:
Award of the Franklin Medal .
107
Committee on Science and the Arts, Stated Meeting, June 2, 1915
114
Membership Notes
Library Notes.
116
Book Notices
119
Publications Received.
121
Current Topics .
16, 62, 99, 100, 122, 123
Announcements.
xi-xx
Published by
THE FRANKLIN INSTITUTE OF THE STATE OF PENNSYLVANIA,
PHILADELPHIA
FIVE DOLLARS PER YEAR (Foreign Postage Additional). SINGLE NUMBERS, FIFTY CENTS.
Entered at the Post-office at Philadelphia, Pa.. as second-class matter.
Copyright, 1915, by THE FRANKLIN INSTITUTE.
