Twentieth Century
Locomotives

BY

ANGUS SINCLAIR COMPANY

Newly Published and is the
Best Book on
Railway Machinery
ever published. Contains
chapters on: Elementary
lessons on first principles;
steam and motive power;
workshop operations; loco-
motive boiler construction;
compound locomotives;
valve motion; machine tools
and shop appliances, and
on nine other subjects.

PROFUSELY ILLUSTRATED.
Contains 670 pages, 6x9 inches.
PRICE, THREE DOLLARS

LOCOMOTIVE ENGINEERING
Department T, 136 Liberty Street
NEW YORK

LITERATURE-(Continued)

sparks, cannot fail to prove of the ut-
most value.

Probably the most interesting feature
of the entire work is the extensive chap-
ter devoted to the description of leading
types of gasoline vehicles, including the
most important of American build. In
this chapter the reader is informed as
to the details of the transmission and
control apparatus in each case. The
chapters on electric vehicles are also full,
and certain to prove of practical use to
the owner and chauffeur. Taking the
subject of electrical apparatus from the
fundamental principles of circuits and
batteries, the discussion passes to the
theory and operation of generators and
motors; the laws of motor operation;
the laws involved in computations of
speed and power; and the varieties of
motor suited to road carriages. Elec-
tricity meters are described and illus-
trated in a brief chapter; and the prin-
ciples underlying storage batteries, their
construction and care, are outlined.

Practical Aid

for the Student and Draftsman

Hints to Young Architects. By GEORGE WIGHTWICK, Architect. Sixth Edition, revised and enlarged by G. HUSKISSON GUILLAUME, Architect. $1.40.

Architecture-Orders. The Orders and their Esthetic Principles. By W. H. LEEDS. Illustrated. 60 Cents.

Architecture Styles. The History and Description of the Styles of Architecture of Various Countries, from the Earliest Period. By T. TALBOT BURY. 80 Cents. ** ORDERS AND STYLES OF ARCHITECTURE, in One Vol. $1.40.

Architecture Design. The Principles of Design in Architecture, as deducible from Nature and exemplified in the Works of the Greek and Gothic Architects. By EDW. LACY GARBETT, Architect. Illustrated. $1.00.

Acoustics in Relation to Architecture and Building. The Laws of Sound as applied to the Arrangement of Buildings. By Professor T. ROGER SMITH, F. R. I. B. A. New Edition, Revised. 60 Cents.

Mathematical Drawing Instruments and How to Use Them. One imperial 16mo volume, bound in cloth, containing 152 pages and 70 illustrations, including eleven different styles of lettering. $1.50.

Mechanical Appliances, Mechanical Movements,
and Novelties of Construction. By Gardner D.
Hiscox, M. E. Cloth. Pages 400. 970 Illustrations.
Indexed. The Norman W. Henley Publishing Com-
pany, New York, N. Y. Price, $3.00.

IT IS IMPOSSIBLE in the space of a brief
review to do more than generalize on the
thousand-and-one details of mechanical
and inventive skill which are briefly but
adequately described and illustrated in
this volume. Though supplementary to
the author's earlier work, "Mechanical
Movements, Powers, and Devices," which
went through ten editions, it is complete
in itself. It covers with special minute-
ness the peculiar requirements of the
various arts and manufactures, and the
complex array of machinery and me-
chanical devices used therein. From the
historical point of view it is valuable to
everyone seeking general information, as
it passes in review the power devices used
in the old as well as in modern industries
-contrivances in which the mechanical
intelligence of all time has found its high-
est expression. A chapter of unique in-
terest is devoted to the many attempts
of misguided inventors during the past
Mention The Technical World.

Draughtsman's Manual; or How Can I Learn Architecture? By F. T. CAMP. Containing hints to inquirers and directions in draughtsmanship. New, revised and enlarged edition. One small volume, cloth. 50 Cents.

Perspective. By ADA CONE A series of practical lessons beginning with elementary principles and carrying the student through a thorough course in perspective. Thirtythree illustrations. One 12mo volume, cloth. $1.00.

Send for complete Catalogue No. 62 just issued

Wm.T.Comstock, Publisher 23 Warren Street, New York

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HE ENGINEERING MAGAZINE presents current practice and advance in engineering. This matter is, in the course of time, included in the text books of the technical colleges. The man who wants to advance, however, must be thoroughly informed on the very latest developments, and for this reason a periodical like The Engineering Magazine is indispensable.

It is written by the highest authorities, and the aim is to make every leading article in it so positively practical that it gives a sound idea not only of what ought to be done, but how to do it. That is, all the articles are "working plans" of actual manufacturing and engineering practice-plans that have been built from and proved successful.

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...

LITERATURE-(Continued)

three hundred years to solve the unsolv-
able problem of perpetual motion.

California

VIA

Union Pacific

FASTEST TIME

SHORTEST LINE
SMOOTHEST TRACK

Millions have been spent in the improvement of
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Tourist Sleepers a Specialty

Experiments with Alternate Currents of High Po-
tential and High Frequency. By Nikola Tesla.
Cloth, 162 Pages. McGraw Publishing Co., New
York. Price $1.00.

THIS book consists of a reprint of a lec-
ture delivered before the Institution of
Electrical Engineers of London on the
subject of alternating currents, especially
currents of high potential and high fre-
quency. The experiments were described,
and at the same time illustrated, in the
course of the lecture.

An interesting statement made is that
a most curious feature of alternating cur-
rents of high frequency and potential is
that they enable us to perform many ex-
periments by the use of one wire only.
Among other experiments it was shown.
that a motor could be made to rotate with
a single connection between it and the
generator; in other words, one terminal
of the motor is connected to one of the
generator, the other terminals of the
motor and generator being insulated in
space. To produce rotation it is gener-
ally necessary to connect the free end of
the motor coil to the insulated body of
some size.

This book contains an appendix by the same author on "Transmission of Electric Energy Without Wires," consisting of a review of his recent work, illustrated with photographs.

Inquire of

E. L. LOMAX, G. P. & T. A.
Omaha, Neb.

Accidents and Emergencies. By Charles W. Dulles.
M. D. 6th Edition, Revised and Enlarged, with New
Illustrations. Cloth. Pages 209. Indexed. P. Blak-
iston's Sons & Company, Publishers, Philadelphia, Pa.
Price, $1.00 net.

IN THE ABSENCE of a physician or a sur-
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someone possessing just such practical
knowledge as is embodied in this handy
volume. The scope of the work includes
all conceivable sorts of emergencies that
are amenable to simple medical or surgi-
cal treatment. It is the unexpected that
very often happens, and in such cases to
be prepared is the better part of wisdom.
The book is abundantly illustrated with
Mention The Technical World.

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