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ELECTRIC HEATING

BY

EDWIN J. HOUSTON, Ph. D., (Princeton)

AND

A. E. KENNELLY, Sc. D.

NEW YORK

NEW YORK

THE W. J. JOHNSTON COMPANY.

253 Broadway

1895

THE NEW YORK
PUBLIC LIBRARY
104204

ASTOR, LENOX AND
TILDEN FOUNDATIONS.

1838.

COPYRIGHT, 1895, BY

THE W. J. JOHNSTON COMPANY.

PREFACE

entitled

IN preparing this volume on ELECTRIC HEATING, as one of a series The Elementary Electro-Technical Series, the authors believe they are meeting a demand, that exists on the part of the general public, for reliable information respecting such matters in electricity as can be readily understood by those not especially trained in electro-technics.

The subject of electric heating is today attracting no little attention. The wonderful growth in electric street railways, coupled with the readiness with which the current can be applied to the heating of the cars, together with the marked efficiency of the electric air heater as an apparatus for transforming electric energy into heat energy, have, during the last decade, caused a develop

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