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The King of all.

JUST FROM THE

PRESS

The Companion volume to Modern Wiring Diagrams

ELECTRICAL WIRING and
CONSTRUCTION TABLES

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By HENRY C. HORSTMANN and VICTOR H. TOUSLEY
Contains hundreds of easy up-to-date tables covering, everything on Electric
Wiring. Bound in full Persian Morocco. Pocket size. Round corners, red edges.

PRICE, NET, $1.50
THIS BOOK CONTAINS:
Tables for direct current calculations. Tables for alternating current calculations,

These tables show at a glance the currents required with any of the systems in
general use, for any voltage, efficiency, or power-factor, and by a very simple cal.

culation (which can be mentally made) also the proper wire for any loss. Tables showing the smallest wire permissible with

any system or number of H. P. or lights under "National Electrical Code." Very convenient for Contractors, Tables for calculating the most economical loss. Tables and diagrams showing the proper size of conduits to accommodate all neces

sary combinations or numbers of wires. Tables and data for estimating at a glanco the quantity of material required in

different lines of work.

As this is intended for a pocket hand-book everything that would make it un. necessarily cumbersome has been omitted. There is no padding. Every page 18 valuable and a time saver. This book can be used every day by the wire-man, the

con. tractor, engineer and

architect. All parts are so simple that very little knowledge is required to understand them.

OTHER IMPORTANT WORKS BY THESE AUTHORS Modern Wiring Diagrams & Descriptions, price

$1.50 Modern Electrical Constructions, price

$1.50 The 3 above volumes in a box. Special price complete,

$4.00 OUR GUARANTEE If any of these books are not worth ten times the amount asked, return them and get your money back. Sent all charges prepaid to any address upon receipt of price.

Our 1907 Catalogue now ready. Sent free. FREDERICK J. DRAKE & CO., Publishers,

or der ing ple a se mention this paper

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In

A NEW — MOST EXHAUSTIVE AND COMPREHENSIVE TREATISE

ON

STEEL

ITS METALLURGY AND MECHANICAL TREATMENT

By Harbord and Hall, in the Metallurgical Series Edited by W. Roberts-Austen

$9.00

Containing 758 pages, 37 folding plates, 100 microsec-
tions from photographs, and 270 illustrationsin the text,

Net
THE OBJECT of the present work is to furnish a full description

of the various branches of steel manufacture, both
from a metallurgical and an engineering standpoint, as well as to discuss the
physics and chemistry of steel in relation to its manufacture. The work has been
divided into four sections: the Manufacture of Steel, Reheating, the Mechanical
Treatment of Steel, and Finished Steel

J. B. LIPPINCOTT COMPANY, Publishers,

PHILADELPHIA

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50 Cents Reference Library

Secures this GREAT
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This magnificent work-costing $750,000 to produce-is a Dictionary and an Encyclopedia combined. In fullness of definitions, number of words defined and accuracy, it is superior to reference works selling for five times its price. We have obtained a limited number of sets which we will close out at half price on the easy monthly-payment plan. We send the complete work to your home for examination, without charge, and if you decide to keep it a first payment of 50 cents secures a set-to be paid for while you are using it.

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Greatest Dictionary Bargain Ever Offered As a Dictionary this work defines 25,000 more words than any other Dictionary and every definition is so clear a school boy can understand it.

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knowledge. The limited edition that we control will be closed out

-MAIL THIS COUPON to prompt purchasers at slightly more than one-third the

AMERICAN NEWSPAPER ASSOCIATION, New York: publishers' price. For instance, the half-morocco bind

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Omee Short Cuts

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