ELISHA GRAY, Ph.D., LL.D.
Reading edition
WILLIAM BRIGGS 29-33 Richmond St. West, Toronto C. W. Coates, Montreal, Que. S. F. Huestis, Halifax, N.S.
CONTENTS.
CHAPTER PAGE
Introductionv
I.The Author's Design1
II.History of Electrical Science6
III.History of Magnetism20
IV.Theory and Nature of Magnetism25
V.Theory of Electricity39
VI.Electrical Currents49
VII.Electric Generators62
VIII.Atmospheric Electricity77
IX.Electrical Measurement83
X.The Electric Telegraph88
XI.Receiving Messages103
XII.Miscellaneous Methods108
XIII.Multiple Transmission114
XIV.Way Duplex System129
XV.The Telephone134
XVI.How the Telephone Talks145
XVII.Submarine Telegraphy154
XVIII.Short-Line Telegraphs159
XIX.The Telautograph165
XX.Some Curiosities171
XXI.Wireless Telegraphy176
XXII.Niagara Falls Power—Introduction186
XXIII.Niagara Falls Power—Appliances190
XXIV.Niagara Falls Power—Appliances199
XXV.Electrical Products—Carborundum209
XXVI.Electrical Products—Bleaching-powder218
XXVII.Electrical Products—Aluminum223
XXVIII.Electrical Products—Calcium Carbide228
XXIX.The New Era234