W.A.
Henry. 8vo, cloth. 657 pages. 1898 $2.00

* * * * *

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MUNN & CO.,
361 BROADWAY, NEW YORK.

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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 pages 1.00
How to Become a Successful Electrician, 189 pp. 1.00
Standard Electrical Dictionary, 682 pages 3.00
Electricity Simplified, 158 pages 1.00

--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.

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_We cannot permit the receipt of Sloane's Electrical Library to pass
by without complimenting you upon the same. It is a most admirable
work. Should be in the hands of all those who are interested in
electricity._

_PHILLIPS, ORMONDE & CO., Engineers._
_Melbourne, Victoria._

_I was highly pleased with the copy of Sloane's Electrical Library,
which arrived in good condition. It is one of the most valuable works
I possess in my library. The use of the Roentgen Rays in my profession
has stimulated my desire for electrical knowledge greatly, and I
consider Sloane's "Electrical Dictionary" a first-class book of
reference. I shall be pleased to recommend it to my colleagues in
search of such a work. Yours truly,_

_P.J. CLENDINNIN, M.D.,_
_Hon. Medical Electrician to the Melbourne Hospital._

MUNN & CO., Publishers, New York.

* * * * *

_JUST PUBLISHED._

Second Edition, Revised and much Enlarged.

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