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GAS ENGINE CASTINGS
bination of wide experience in the class
in the rough or partly fin-
Castings, Materials and Blue Prints, complete, $16.50.
Circular 7. PARSELL @ WEED 129-131 West 31st St.
NEW YORK CITY
MACKENZIE Q LEE
Telephone Main 3663
Boiler Construction. By Frank B. Kleinhans. Pages
421. Cloth. Illustrated. The Derry-Collard Company,
New York, Publishers. Price, $3.00.
A valuable feature is the clear explana-
Boiler-Shop Machinery is illustrated by excellent half-tone engravings. Tables give valuable information regarding dies and punches, rate of driving rivets, etc.
Takes spare time only. Oldest and Best
Steel Square Pocket-Book. By Dwight L. Stoddard.
Pages 110. Cloth. Illustrated. Industrial Publication
Company, New York, Publishers. Price, 50 cents. THIS LITTLE INEXPENSIVE BOOK gives the practical, every-day uses of the steel square. The various graduations are first explained so that the reader may know the tool. Laying-out spacing, and measuring main rafters, valley and hip rafters, jack rafters, miters, curved rafters, etc., are among the subjects treated. The illustrations are very clear and simple. A thorough understanding of the problems in the book should lead to a complete mastery of the tool.
The most costly piece of railroad literature ever is-
and Answers. By Spangenberg, Uhl, and Pratt.
Cloth. Illustrated. Indexed. Pages 672. Geo. A. quisite examples of the modern printers' art, and each
Zeller, St. Louis, Mo., Publisher. Price, $3.50. worthy of framing. Sent free on receipt of 10 cents to
THIS REFERENCE BOOK for steam, elecpay postage.
trical, and refrigerating engineers, is preJ. W. WHITE,
pared in question-and-answer form, and
includes stationary, locomotive, and elec-
trical subjects, as well as mechanical re
frigeration, compressed air, gas engines, SEABOARD AIR LINE RAILWAY hydraulic elevators, etc. The book en
deavors to combine both theoretical and Mention The Technical World.
LITERATURE-(Continued) practical work, but even a slight examination indicates the strong tendency toward the practical. The names of the authors alone are sufficient to guarantee the practical usefulness of the volume. Prof. E. Spangenberg, C. E., was superintendent of the St. Louis School of Engineering, a man of wide practical experience and a successful teacher, especially in the preparation of men for license examinations. Mr. Albert Uhl, A. I. E. E., is an electrical contractor, and is instructor in practical electricity at the St. Louis School of Engineering. The third author, Mr. E. W. Pratt, is an expert on locomotive and railroad matters, being Master Mechanic of one of the large railways.
THE ILLINOIS CENTRAL RAILROAD
-AND THEYAZOO & MISSISSIPPI VALLEY R.R.
For full information and descriptive pamphlet, address
J. C. CLAIR.
Industrial Commissionos, 1 Park Row, Chicago, ill.
Telephone Principles and Practice. By George
Wilder, Ph. D., Assistant Professor of Electrical Engineering, Armour Institute of Technology. Pages 445. Cantwell Publishing Company, Madison, Wis. Price, $2.00, postpaid.
for Industries Erie Railroad Chicago to New York
This is a new book in the telephone field, and consequently has the prime advantage of being thoroughly up-to-date. The aim of the book is to treat fully the fundamental principles of telephony, and their applications to telephone apparatus as designed, manufactured, and operated to-day. This the author has succeeded in doing admirably, in a clear and concise manner.
The subject is treated in four sections. The first covers the principles of physics
and electricity, which are necessary for The Erie Railroad Company's the reader to grasp in order to be able Industrial Department has all to apply them to the construction and the territory traversed by the
operation of the telephone circuits. The
second section relates to the details of railroad districted in relation to
subscribers instruments. The third secresources, adaptability, markets tion treats of party lines, and of the manand advantages for manufactur
agement of small exchanges belonging ing, and can advise with manu
to the Generator Call or Local Battery facturers in relation to the most
type. The fourth section deals with the suitable locations. For full in
construction of small exchanges, party
and toll lines, their electrical properties, formation, address
and their protection against lightning. LUIS JACKSON
The book is profusely illustrated, a Industrial Commissioner
particularly valuable feature being cirErie Railroad Company
cuits of the various phones in actual use 21 Cortlandt Street, New York
to-day. Mention The Technical World.
SOOD To the
From Chicago, every day, September 15 to October
15, 1904, via the Chicago, Milwaukee 2 St. Paul Ry.
To California you have the advantage of the overland service of the Chicago, Milwaukee & St. Paul and Union Pacific Line. Through train service, including Standard and tourist sleeping cars, Chicago to San Francisco every day. Tourist cars to Los Angeles Mondays and Saturdays. Leave Chicago 10:25 P. M.
To North Pacific Coast points you have the choice of the above route or that via St. Paul and Minneapolis, with double daily train service. Leave Chicago 9 A. M., 6:30 P. M. and 10:30 P. M.
For those who prefer a Southern route to California, the Southwest Limited via Kansas City is recommended. Leave Chicago 6 P. M. daily.
Above rates are called colonist second-class rates. Tickets are good in tourist sleepers, in which the rate for a double berth, Chicago to San Francisco, or Los Angeles is $7. Tourist sleepers are clean, comfortable and economical.
A postal card will bring you complete information.
F. A. MILLER,
Chicago, Milwaukee 2 St. Paul Railway.
Mention The Technical World.
Good Business English
These books teach salesmen how to write convincing letters that sell goods, teach credit men how to write tactful letters that bring in money and give no offense, teach correspondents how to write forceful business-bringing letters, teach stenographers how to master correspondence, teach advertisement writers how to write strong, "pulling' copy. They form a complete college course in business English to be read at leisure-to be put into daily practice at once. Many successful men are earning large salaries merely because they know how to state a business proposition clearly, tersely, concisely, forcefully. This set of books comprises the notable Sherwin Cody course in business English complete. Before being published in book form
solaiorberg 0 Den
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Magazines Cassier's Magazine (August)- New York THIS NUMBER contains as one of its most interesting features an article on Marble Quarrying in America, by D. A. Willey. Probably very few people know of the vast resources of the Vermont marble quarries, yet one enterprise alone produces from 60,000 to 70,000 tons annually. And from other deposits in this vicinity more marble is quarried than from all the other American quarries combined. This is interesting from a scientific standpoint, because practically all the work, from the quarrying of the marble to the finishing of the complete object, is done electrically and from power furnished by the Otter Creek. This same industry now gives employment to some 5,000 men and represents an investment of $7,500,000. Not only is the marble
furnished for rough and cheap grades Less Than Regular Price of work, but the finished product ranges
from the block for the building base to statues and vases, as well as interior decoration.
The mechanism for working in marble is so varied that a piece of the stone
can be turned, planed, and routed as well SYSTEM
as a piece of steel, entirely by power tools. The tool of the turning lathe is applied as in the ordinary metal turning lathe. Here can be seen circular columns weighing over 20 tons, exactly shaped by the power lathes. Also globes and tombstones containing ornaments in a basrelief done with a planer. These machines are operated both by water power
and by individual electric motors. The WRITE YOUR NAME BELOW
pneumatic chisel is an aid to the sculptor, The Armour Glue Works, Chicago, Ill.
who can create designs not only beautiful but extremely intricate in a small fraction of the time required with the mallet.
"Industrial Locomotives," by J. F. Gairns, treats the subject from the standpoint of compressed air and internal
combustion. The writer states that it is cided financial advantage.”
probable that the compressed air locoAdvertising Expert.
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