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Practical Mathematics

FOR THE

Engineer and Electrician

BY

ELMER E. BURNS
Author of “The Electric Motor and Its Practical Operation,”.

and “Alternating Currents Simplified.",

AND

JOSEPH G. BRANCH, B. Š., M. E:
Pormer Chief of the Department of Inspection Boilers and Elevusors, and
Member of the Board of Examining Engineers for the City
of St. Louis. Member of the An.erican Society

of Mechanical Engineers, Etc.
Author of “Stationary Engineering,”,“ Conversations on Electricity," Prac-
tical Electricity,'' Gespraeche ueber Elektrizitaet," " Engineers' Chart
Book," “One Thousand Questions and Answers for Engineers,
Applicants for License and Electricians," “ Heat and Light
from Municipal and Other Waste," Etc. Editor “ Prac-

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tical Electricity and Engineering.".

SECOND EDITION

CHICAGO:
The Joseph G. Branch Publishing Company

1914

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