The boy electricians as detectives

Front matter

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Preface

Owing to requests from numerous readers for a further account of the doings of Tom and his chums, Rick and Ralph, the author has consented to prepare a sequel to “ The Boy Electrician . ’ 9 The result is the present volume.

Although a sequel to the first volume, in as far as the same characters figure therein, in each, yet the “ Boy Electricians as Detectives 9 9 is an independent narrative, it is not necessary in order to enjoy it, to have read “The Boy Electrician . 9 9

Wireless telegraphy, which is attracting the practical attention of so many brainy boys, plays a prominent part in the plot of this story. Beginning with an interesting account of the induction coil, there follow brief, easily-understood descriptions of the underlying principles of dynamo-electric machines and electric motors ; of the relation between lightning flashes and wireless telegraphy; and of the general principles of this practical and recent form of telegraphy.

The main portion of the book, however, relates the clever manner in which the three

PREFACE boys, Tom, Rick, and Ralph, aid the Philadelphia police in running down a number of criminals, and how they were able actually to employ their knowledge of wireless telegraphy at a very critical time.

The author trusts that this volume will not only afford its readers considerable enjoyment, but that it will also enable them to understand the subject of wireless telegraphy.

E. J. H.

Contents

PAGE

I. In Tom’s Laboratory 11

II. Reddy and the Crooks Declare War 26