"This is an admirably complete and explicit handbook for young boys who fall under the spell of tinkering with electrical apparatus."—Boston Transcript.

"Well presented and attractive this book will be a source of great benefit and delight for any bright boy."—New Orleans Times-Picayune.

*Price, $2.00, Postpaid*

COUNTLESS OTHER MAGAZINES, NEWSPAPERS AND LIBRARIES HAVE

ENDORSED THIS GREAT BOOK. SEND FOR A COPY NOW.

*If you are interested in this great book, write for our 8-page special*

*descriptive circular.*

*Experimental Wireless Construction*

*EIGHTY-SIX PAGES NINETY-THREE ILLUSTRATIONS*

*Only 25 Cents, Postpaid*