Electricity and Magnetism

by Elisha Gray

NATURE'S MIRACLES, VOL. III.

Electricity
and Magnetism

BY

ELISHA GRAY, Ph.D., LL.D.

WILLIAM BRIGGS
29-33 Richmond St. West, Toronto
C. W. Coates, Montreal, Que.
S. F. Huestis, Halifax, N.S.

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CONTENTS.

CHAPTER		PAGE
	Introduction	[v]
[I.]	The Author's Design	[1]
[II.]	History of Electrical Science	[6]
[III.]	History of Magnetism	[20]
[IV.]	Theory and Nature of Magnetism	[25]
[V.]	Theory of Electricity	[39]
[VI.]	Electrical Currents	[49]
[VII.]	Electric Generators	[62]
[VIII.]	Atmospheric Electricity	[77]
[IX.]	Electrical Measurement	[83]
[X.]	The Electric Telegraph	[88]
[XI.]	Receiving Messages	[103]
[XII.]	Miscellaneous Methods	[108]
[XIII.]	Multiple Transmission	[114]
[XIV.]	Way Duplex System	[129]
[XV.]	The Telephone	[134]
[XVI.]	How the Telephone Talks	[145]
[XVII.]	Submarine Telegraphy	[154]
[XVIII.]	Short-Line Telegraphs	[159]
[XIX.]	The Telautograph	[165]
[XX.]	Some Curiosities	[171]
[XXI.]	Wireless Telegraphy	[176]
[XXII.]	Niagara Falls Power—Introduction	[186]
[XXIII.]	Niagara Falls Power—Appliances	[190]
[XXIV.]	Niagara Falls Power—Appliances	[199]
[XXV.]	Electrical Products—Carborundum	[209]
[XXVI.]	Electrical Products—Bleaching-powder	[218]
[XXVII.]	Electrical Products—Aluminum	[223]
[XXVIII.]	Electrical Products—Calcium Carbide	[228]
[XXIX.]	The New Era	[234]

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