SCIENCE, OUT-OF-DOOR BOOKS, AND STORIES OF ANIMALS
To know that which before us lies in daily life is the prime of
wisdom.
MILTON.
ADAMS, J.H.
Harper's Electricity Book for Boys.
Harper. 1.75
A large part of this volume is somewhat beyond the grasp of the
average boy of fourteen, and parents should look it over carefully
before letting their children carry out the instructions, though we
are told that "there need be no concern whatever as to possible danger
if the book is read with reasonable intelligence. Mr. Adams has taken
pains to place danger-signals wherever special precautions are
advisable, and, as a father of boys who are constantly working with
electricity in his laboratory, he may be relied upon as a safe and
sure counsellor and guide."
Directions are given for making, among other things, push-buttons,
switches, annunciators, dynamos, simple telephones, and line and
wireless telegraphs. There is a chapter on electroplating. At the (p. 217)
end of the volume is an article explaining electric light, heat, power,
and traction, by J.B. Baker, technical editor, United States Geological
Survey; also a dictionary of electrical terms. Many working diagrams
are included.
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