Our large Catalogue of American and Foreign Scientific and Technical Books, embracing more than Fifty different subjects, and containing 116 pages, will be mailed, free, to any address in the world.

Any of the foregoing Books mailed, on receipt of price, to any address. Remit by Draft, Postal Note, Check, or Money Order, to order of

MUNN & CO.,
361 BROADWAY, NEW YORK.


A COMPLETE

ELECTRICAL LIBRARY

BY PROF. T. O'CONOR SLOANE,
Comprising five books, as follows:

Arithmetic of Electricity, 138 pages$1.00
Electric Toy Making, 140 pages1.00
How to Become a Successful Electrician, 189 pp.1.00
Standard Electrical Dictionary, 682 pages3.00
Electricity Simplified, 158 pages1.00

The above five books by Prof. Sloane may be purchased singly at the published prices, or the set complete, put up in a neat folding box, will be furnished to Scientific American readers at the special reduced price of Five dollars. You save $2 by ordering the complete set. Five volumes, 1,300 pages, and over 450 illustrations. Send for full table of contents of each of the books.

Our complete book catalogue of 116 pages, containing reference to works of a scientific and technical character, will be sent free to any address on application.