Chapter I.—WIRELESS TELEGRAPHY. An intensely interesting subject; amateur wireless telegraphy; the purpose of the aerial and ground; the apparatus used to send messages; the apparatus used to receive messages.

Chapter II.—AERIALS AND GROUNDS. Where to put up the aerial; types of aerials; the "T" aerial; the masts; the wire; insulators; leading in the wires; the ground.

Chapter III.—HOW TO BUILD AND OPERATE THE SIMPLEX DOUBLE SLIDE RECEIVING OUTFIT. The tuning coil; the tube; the sliders; the fixed condenser; the detector parts; assembling the set; connecting the instruments; operation.

Chapter IV.—HOW TO BUILD THE SIMPLEX LOOSE COUPLER, DETECTOR AND CONDENSER. The base; the primary; the secondary; the pillar; the switch; How to make the Simplex cat whisker detector; How to make the Simplex fixed condenser; How to connect the apparatus; How to tune with the loose coupler; How to adjust the detector.

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.

The Operation of Wireless Telegraph Apparatus