Chapter XIX—MISCELLANEOUS APPARATUS. Electrolysis of Water.
Electro-Plating. Electricity from Heat. A Handy Light. An Experimental Arc Lamp. A Magnetic Diver. Magnetic Fish. A Magnetic Clown. An Electric Breeze. A Static Motor.
*Price Postpaid, 30 cents per volume*
All three volumes can be supplied bound together with handsome cloth cover for $1.25 postpaid.
Vacuum Tubes in Wireless Communication
By ELMER E. BUCHER
*The only Text Book on the market devoted solely to the various applications of the Oscillation Valve.*
An elementary text book for students, operators, experimenters and engineers. Naval wireless men find this book especially helpful. Tells in understandable language the fundamental operating principle of the vacuum tube. Shows over 100 different circuits for the practical use of the Vacuum Tube as a Detector, Radio or Audio Frequency Amplifier, Regenerative Receiver, Beat Receiver, and Generator of Radio Frequency Currents.
More than 100 diagrams reveal, step by step, in simple and direct form, the uses of the vacuum tube.
*Cloth. Size 6 x 9 inches. 202 pages. 159 diagrams and illustrations. Price, $1.75. Postage, 10 cents.*
Practical Wireless Telegraphy
By ELMER E. BUCHER
More than 65,000 copies of this book have been sold to date. It is used in practically every school, college, library and training camp in this country.
*Practical Wireless Telegraphy* is the recognized standard wireless text book. It furnishes much information of utmost value in regard to the very latest styles of wireless sets now in use.
It is the first wireless text book to treat each topic separately and completely, furnishing a progressive study from first principles to expert practice. Starting with elementary data, it progresses, chapter by chapter, over the entire field of wireless—fundamentals, construction and practical operation.
*Size 6 x 9 inches. 352 pages. 340 illustrations. Handsomely bound in full cloth. Price, $1.75. Postage, 10 cents.*
Radio Telephony
By ALFRED N. GOLDSMITH, Ph D.
*It is the only book treating the subject of Radio Telephony in all its aspects.*
This complete text on radio telephony is intended for radio engineers, operators and experimenters, also radio electricians in the Navy, men in the Signal Corps and especially men in the Aviation Service who handle radio equipment. Students and others who desire to be clearly informed concerning this newest and most interesting branch of electric communication need this book.
It is written in clear style, and pre-supposes very little knowledge of radio. Fully illustrated with wiring diagrams and previously unpublished photographs of "wireless telephone" apparatus.
There are over 400 separate topics listed in a carefully prepared index.
*Size 6 x 9 inches. 256 pages. 226 illustrations. Full cloth, stamped in gold. Price, $2.00. Postage, 10 cents.*
The Operation of Wireless Telegraph Apparatus
Do your Wireless friends come to you for advice on constructing and operating their apparatus or do you go to them for information?
Here is a chance for YOU to become the _authority_.
*This book is a necessity to every Progressive Experimenter.*
*It shows how to obtain the very highest efficiency from any station, and how to comply with the law. How to tune, adjust your detector, spark gap, phones, etc.*
*Price, 30 Cents, Postpaid.*
This book was written for the wireless experimenter who has passed the amateur stage, but explains how the beginner also can obtain the very best results from his station. It contains much useful information to this end and many "kinks".
*IT SHOWS HOW* to receive or send on long or short wave lengths with highest efficiency, to tune for longest distance reception of messages, to use the buzzer test, how to test and connect condensers, receivers, etc., how to use receiving transformers, variometers, etc., all with _highest efficiency_ in view.
*IT ALSO DESCRIBES* the construction and use of a simple, inexpensive wave meter to tune the station to any desired wave length, and tells how to obtain a _sharp_ wave and a _pure_ wave.
*Model Flying Machines*
*HOW TO BUILD AND FLY THEM*
Will prove interesting and valuable.
Have you ever built and flown a Model Racer?
If not, you have missed something.
Price, 25 Cents, Postpaid.
Model Aeroplaning is one of the most fascinating and instructive of sports.
Thousands of young men and boys have formed Model Aero Clubs and organized Flying Contests throughout the country.
"MODEL FLYING MACHINES" of the _Arts and Sciences_ series is the only book giving reliable data and instructions for the construction of practical Model Aeroplanes.
IF YOU ARE A BEGINNER, this is the book that you ought to have. It will start you right. It tells how to build seven different types of machines, starting with the simplest Monoplane and finishing with several Long Distance Racing Models.
IF YOU ARE INTERESTED IN MODEL AEROPLANING, this book will prove the one you have been looking for. Gives valuable "Kinks". Tells how to carve propellers, make winders, adjust and fly machines, etc. Fully illustrated with large size, detailed working drawings, showing the exact size of each part. Twelve full-page plates.
Printed on first-class paper. Heavy cover in three colors.
Sent postpaid by return mail upon receipt of 25 cents.
*EVERY MODEL AVIATOR OUGHT TO HAVE A COPY*