Chapter V: Telephone Receivers and Headbands

Chapter VI.—*HOW TO BUILD THE SIMPLEX SPARK COIL.* The core; the secondary; the condenser; the coil heads; the base; the interrupter parts; the bridge.

Chapter VII.—*HOW TO MAKE THE SIMPLEX KEY*.

Chapter VIII.—*HOW TO CONNECT AND OPERATE THE APPARATUS*. How to connect and operate a complete wireless station; How to operate; the code, etc.

*Three New Books on Home Made*

*Electrical Apparatus*

The Book you are now reading is only the first volume of "Home-made Electrical Apparatus." Written in a very clear and simple style, the other volumes are invaluable to the young experimenter. There are no old or obsolete forms of apparatus described but only the latest electrical devices, making them

*The Most Thorough and Complete Books for*

*the Young Electrical Experimenter Published*

The partial Table of Contents below only gives a small idea of the interesting matter contained in these volumes.

VOLUME II

72 Pages 55 Illustrations

Table of Contents