The rules and regulations of the Board of Fire Underwriters in regard to the installation and management of gasoline motors is given in full, suggesting the safe installation of explosive motor power. A list of United States Patents issued on gas, gasoline, and oil engines and their adjuncts from 1875 to date is included. 640 pages. 435 engravings.

Folding plates.

Price

$2.50

GAS ENGINE CONSTRUCTION, OR HOW TO BUILD A HALF-HORSE-
POWER GAS ENGINE. By PARSELL and WEED.

A practical treatise of 300 pages describing the theory and principles of the action of
Gas Engines of various types and the design and construction of a half-horse-power
Gas Engine, with illustrations of the work in actual progress, together with the dimen-
sioned working drawings, giving clearly the sizes of the various details; for the student,
the scientific investigator, and the amateur mechanic. This book treats of the subject
more from the standpoint of practice than that of theory. The principles of operation
of Gas Engines are clearly and simply described, and then the actual construction of a
half-horse-power engine is taken up, step by step, showing in detail the making of the
Gas Engine. 3d Edition. 300 pages. Price.
$2.50

HOW TO RUN AND INSTALL GASOLINE ENGINES. By C. VON CULIN.
Revised and enlarged edition just issued. The object of this little book is to furnish
a pocket instructor for the beginner, the busy man who uses an engine for pleasure or
profit, but who does not have the time or inclination for a technical book, but simply
to thoroughly understand how to properly operate, install and care for his own engine.
The index refers to each trouble, remedy, and subject alphabetically. Being a quick
reference to find the cause, remedy and prevention for troubles, and to become an
expert with his own engine. Pocket size. Paper binding. Price
25 cents
MODERN GAS ENGINES AND PRODUCER GAS PLANTS. By R. E. MATHOT.
A guide for the gas engine designer, user, and engineer in the construction, selection,
purchase, installation, operation, and maintenance of gas engines. More than one
book on gas engines has been written, but not one has thus far even encroached on the
field covered by this book. Above all Mr. Mathot's work is a practical guide. Recog-
nizing the need of a volume that would assist the gas engine user in understanding
thoroughly the motor upon which he depends for power, the author has discussed his
subject without the help of any mathematics and without elaborate theoretical ex-
planations. Every part of the gas engine is described in detail, tersely, clearly, with
a thorough understanding of the requirements of the mechanic. Helpful suggestions
as to the purchase of an engine, its installation, care, and operation, form a most
valuable feature of the work. 320 pages.
175 detailed illustrations. Price. $2.50

THE MODERN GAS TRACTOR. BY VICTOR W. PAGE.

A complete treatise describing all types and sizes of gasoline, kerosene and oil tractors. Considers design and construction exhaustively, gives complete instructions for care, operation and repair, outlines all practical applications on the road and in the field. The best and latest work on farm tractors and tractor power plants. A work needed by farmers, students, blacksmiths, mechanics, salesmen, implement dealers, designers and engineers. 500 pages. Nearly 300 illustrations and folding plates. Price $2.00

GEARING AND CAMS

BEVEL GEAR TABLES. By D. AG. ENGSTROM.

Does away

A book that will at once commend itself to mechanics and draftsmen.
with all the trigonometry and fancy figuring on bevel gears, and makes it easy for any-
one to lay them out or make them just right. There are 36 full-page tables that
show every necessary dimension for all sizes or combinations you're apt to need. No
puzzling, figuring or guessing. Gives placing distance, all the angles (including
cutting angles), and the correct cutter to use. A copy of this prepares you for any-
thing in the bevel-gear line. 3d Edition. 66 pages.
$1.00

CHANGE GEAR DEVICES. By OSCAR E. PERRIGO.

A practical book for every designer, draftsman, and mechanic interested in the invention and development of the devices for feed changes on the different machines requiring such mechanism. All the necessary information on this subject is taken up, analyzed, classified, sifted, and concentrated for the use of busy men who have not the time to go through the masses of irrelevant matter with which such a subject is usually encumbered and select such information as will be useful to them.

It shows just what has been done, how it has been done, when it was done, and who did it. It saves time in hunting up patent records and re-inventing old ideas. 88 $1.00

pages.

DRAFTING OF CAMS. By Louis ROUILLION.

The laying out of cams is a serious problem unless you know how to go at it right.
This puts you on the right road for practically any kind of cam you are likely to run
up against. 3d Edition.
25 cents

HYDRAULICS

HYDRAULIC ENGINEERING. By GARDNER D. HISCOX.

A treatise on the properties, power, and resources of water for all purposes. Including
the measurement of streams, the flow of water in pipes or conduits; the horse-power
of falling water, turbine and impact water-wheels, wave motors, centrifugal, recipro-
cating and air-lift pumps. With 300 figures and diagrams and 36 practical tables.
All who are interested in water-works development will find this book a useful one,
because it is an entirely practical treatise upon a subject of present importance, and
cannot fail in having a far-reaching influence, and for this reason should have a place
in the working library of every engineer. Among the subjects treated are: Historical
Hydraulics, Properties of Water, Measurement of the Flow of Streams; Flow
from Sub-surface Orifices and Nozzles; Flow of Water in Pipes; Siphons of Various
Kinds; Dams and Great Storage Reservoirs; City and Town Water Supply; Wells
and Their Reinforcement; Air Lift Methods of Raising Water; Artesian Wells;
Irrigation of Arid Districts;_ Water Power; Water Wheels; Pumps and Pumping
Machinery; Reciprocating Pumps; Hydraulic Power Transmission; Hydraulic
Mining; Canals; Ditches; Conduits and Pipe Lines; Marine Hydraulics; Tidal and
Sea Wave Power, etc. 320 pages. Price
$4.00

INVENTIONS PATENTS

INVENTORS' MANUAL, HOW TO MAKE A PATENT PAY.

This is a book designed as a guide to inventors in perfecting their inventions, taking
out their patents and disposing of them. It is not in any sense a Patent Solicitor's
Circular nor a Patent Broker's Advertisement. No advertisements of any description
appear in the work. It is a book containing a quarter of a century's experience of a
successful inventor, together with notes based upon the experience of many other
inventors.

Among the subjects treated in this work are: How to Invent. How to Secure a
Good Patent. Value of Good Invention. How to Exhibit an Invention. How to
Interest Capital. How to Estimate the Value of a Patent. Value of Design Patents.
Value of Foreign Patents. Value of Small Inventions. Advice on Selling Patents.
Advice on the Formation of Stock Companies. Advice on the Formation of Limited
Liability Companies. Advice on Disposing of Old Patents. Advice as to Patent
Attorneys. Advice as to Selling Agents. Forms of Assignments. License and Con-
tracts. State Laws Concerning Patent Rights. 1900 Census of the United States by
Counts of Over 10,000 Population. Revised edition. 120 pages. Price. . $1.00

KNOTS

KNOTS, SPLICES AND ROPE WORK. By A. HYATT VERRILL.

This is a practical book giving complete and simple directions for making all the most
useful and ornamental knots in common use, with chapters on Splicing, Pointing,
Seizing, Serving, etc. This book is fully illustrated with one hundred and fifty
original engravings, which show how each knot, tie or splice is formed, and its appear-
ance when finished. The book will be found of the greatest value to Campers, Yachts-
men, Travelers, Boy Scouts, in fact, to anyone having occasion to use or handle rope
or knots for any purpose. The book is thoroughly reliable and practical, and is not
only a guide, but a teacher. It is the standard work on the subject. Among the
contents are: 1. Cordage, Kinds of Rope. Construction of Rope, Parts of Rope
Cable and Bolt Rope. Strength of Rope, Weight of Rope. 2. Simple Knots and
Bends. Terms Used in Handling Rope. Seizing Rope. 3. Ties and Hitches. 4.
Noose, Loops and Mooring Knots. 5. Shortenings, Grommets and Salvages. 6.
Lashings, Seizings and Splices. 7. Fancy Knots and Rope Work. 128 pages. 150
original engravings. Price
60 cents

LATHE WORK

LATHE DESIGN, CONSTRUCTION, AND OPERATION, WITH PRACTICAL EXAMPLES OF LATHE WORK. By OSCAR E. PERRIGO.

A new revised edition, and the only complete American work on the subject, written by a man who knows not only how work ought to be done, but who also knows how to do it, and how to convey this knowledge to others. It is strictly up-to-date in its descriptions and illustrations. Lathe history and the relations of the lathe to manufacturing are given; also a description of the various devices for feeds and thread cutting mechanisms from early efforts in this direction to the present time. Lathe design is thoroughly discussed, including back gearing, driving cones, thread-cutting gears, and all the essential elements of the modern lathe. The classification of lathes is taken up, giving the essential differences of the several types of lathes including, as is usually understood, engine lathes, bench lathes, speed lathes, forge lathes, gap lathes, pulley lathes, forming lathes, multiple-spindle lathes, rapid-reduction lathes, precision lathes, turret lathes, special lathes, electrically-driven lathes, etc. In addition to the complete exposition on construction and design, much practical matter on lathe installation, care and operation has been incorporated in the enlarged 1915 edition. All kinds of lathe attachments for drilling, milling, etc., are described and complete instructions are given to enable the novice machinist to grasp the art of lathe operation as well as the principles involved in design. A number of difficult machining operations are described at length and illustrated. The new edition has nearly 500 pages and 350 illustrations.

Price

$2.50

WHAT IS SAID OF THIS BOOK: "This is a lathe book from beginning to end, and is just the kind of a book which one delights to consult, a masterly treatment of the subject in hand."-Engineering News, "This work will be of exceptional interest to anyone who is interested in lathe practice, as one very seldom sees such a complete treatise on a subject as this is on the lathe.' Canadian Machinery.

TURNING AND BORING TAPERS. By FRED H. COLVIN.

There are two ways to turn tapers; the right way and one other. This treatise has
to do with the right way; it tells you how to start the work properly, how to set the
lathe, what tools to use and how to use them, and forty and one other little things
that you should know. Fourth edition
25 cents

LIQUID AIR

LIQUID AIR AND THE LIQUEFACTION OF GASES. By T. O'CONOR SLOANE. This book gives the history of the theory, discovery, and manufacture of Liquid Air, and contains an illustrated description of all the experiments that have excited the wonder of audiences all over the country. It shows how liquid air, like water, is carried hundreds of miles and is handled in open buckets. It tells what may be expected from it in the near future.

A book that renders simple one of the most perplexing chemical problems of the
century. Startling developments illustrated by actual experiments.

It is not only a work of scientific interest and authority, but is intended for the general
reader, being written in a popular style-easily understood by every one. Second
edition. 365 pages. Price
$2.00

LOCOMOTIVE ENGINEERING

AIR-BRAKE CATECHISM. By ROBERT H. BLACKALL.

The

This book is a standard text book. It covers the Westinghouse Air-Brake Equipment,
including the No. 5 and the No. 6 E. T. Locomotive Brake Equipment; the K (Quick,
Service) Triple Valve for Freight Service; and the Cross-Compound Pump.
operation of all parts of the apparatus is explained in detail, and a practical way of
finding their peculiarities and defects, with a proper remedy, is given. It contains
2,000 questions with their answers, which will enable any railroad man to pass any
examination on the subject of Air Brakes. Endorsed and used by air-brake instruc-
tors and examiners on nearly every railroad in the United States. 26th Edition. 411
pages, fully illustrated with colored plates and diagrams.
$2.00

AMERICAN COMPOUND LOCOMOTIVES. BY FRED H. COLVIN.

Rich

The only book on compounds for the engineman or shopman that shows in a plain
practical way the various features of compound locomotives in use. Shows how they
are made, what to do when they break down or balk. Contains sections as follows:-
A Bit of History. Theory of Compounding Steam Cylinders. Baldwin Two-Cylinder
Compound. Pittsburg Two-Cylinder Compound. Rhode Island Compound.
mond Compound. Rogers Compound. Schenectady Two-Cylinder Compound.
Vauclain Compound. Tandem Compounds. Baldwin Tandem. The Colvin-Wight-
man Tandem. Schenectady Tandem. Balanced Locomotives. Baldwin Balanced
Compound. Plans for Balancing. Locating Blows. Breakdowns. Reducing Valves.
Drifting. Valve Motion. Disconnecting. Power of Compound Locomotives. Practi-
cal Notes.

Fully illustrated and containing ten special "Duotone" inserts on heavy Plate Paper,
showing different types of Compounds.
142 pages. Price
$1.00

COMBUSTION OF COAL AND THE PREVENTION OF SMOKE. By Wм. M. BARR.

This book has been prepared with special reference to the generation of heat by the combustion of the common fuels found in the United States and deals particularly with the conditions necessary to the economic and smokeless combustion of bituminous coal in Stationary and Locomotive Steam Boilers.

The ar

Presentation of this important subject is systematic and progressive.
rangement of the book is in a series of practical questions to which are appended
accurate answers, which describe in language free from technicalities the several
processes involved in the furnace combustion of American fuels; it clearly states the
essential requisites for perfect combustion, and points out the best methods of furnace
construction for obtaining the greatest quantity of heat from any given quality of
coal. Nearly 350 pages, fully illustrated. Price.

DIARY OF A ROUND-HOUSE FOREMAN. By T. S. REILLY.

$1.00

This is the greatest book of railroad experiences ever published. Containing a fund of
information and suggestions along the line of handling men, organizing, etc., that one
cannot afford to miss. 176 pages. Price
$1.00

LINK MOTIONS, VALVES AND VALVE SETTING. By FRED H. COLVIN, Associate Editor of American Machinist.

A handy book for the engineer or machinist that clears up the mysteries of valve
setting. Shows the different valve gears in use, how they work, and why. Piston
and slide valves of different types are illustrated and explained. A book that every
railroad man in the motive power department ought to have. Contains chapters on
Locomotive Link Motion, Valve Movements, Setting Slide Valves, Analysis by
Diagrams, Modern Practice, Slip of Block, Slice Valves, Piston Valves, Setting Piston
Valves, Joy-Allen Valve Gear, Walschaert Valve Gear, Gooch Valve Gear, Alfree-
Hubbell Valve Gear, etc., etc. Fully illustrated.
Price.
50 cents

LOCOMOTIVE BOILER CONSTRUCTION.

By FRANK A. KLEINHANS.

The construction of boilers in general is treated, and, following this, the locomotive boiler is taken up in the order in which its various parts go through the shop. Shows all types of boilers used; gives details of construction; practical facts, such as life of riveting, punches and dies; work done per day, allowance for bending and flanging sheets, and other data. Including the recent Locomotive Boiler Inspection Laws and Examination Questions with their answers for Government Inspectors. Contains chapters on Laying Out Work; Flanging and Forging; Punching; Shearing; Plate Planing; General Tables; Finishing Parts; Bending; Machinery Parts; Riveting; Boiler Details; Smoke Box Details; Assembling and Calking; Boiler Shop Machinery, etc., etc.

There isn't a man who has anything to do with boiler work, either new or repair work, who doesn't need this book. The manufacturer, superintendent, foreman, and boiler worker-all need it. No matter what the type of boiler, you'll find a mint of information that you wouldn't be without. Over 400 pages, five large folding plates. Price

$3.00

LOCOMOTIVE BREAKDOWNS AND THEIR REMEDIES. By GEO. L. FOWLER
Revised by Wм. W. WOOD, Air-Brake Instructor. Just issued. Revised

pocket edition.

It is out of the question to try and tell you about every subject that is covered in this
pocket edition of Locomotive Breakdowns. Just imagine all the common troubles
that an engineer,may expect to happen some time, and then add all of the unexpected
ones, troubles that could occur, but that you have never thought about, and you will
find that they are all treated with the very best methods of repair. Walschaert
Locomotive Valve Gear Troubles, Electric Headlight Troubles, as well as Questions
and Answers on the Air Brake are all included.
Fully illustrated.
312 pages.
8th Revised Edition.

LOCOMOTIVE CATECHISM. By ROBERT GRimshaw.

$1.00

The revised edition of "Locomotive Catechism," by Robert Grimshaw, is a New Book
from Cover to Cover.
illustrations of previous editions.
It contains twice as many pages and double the number of
tion ever published on the construction and management of modern locomotives.
Includes the greatest amount of practical informa-
Specially Prepared Chapters on the Walschaert Locomotive Valve Gear, the Air-
Brake Equipment and the Electric Head Light are given.

It commends itself at once to every Engineer and Fireman, and to all who are going in
for examination or promotion. In plain language, with full, complete answers, not only
all the questions asked by the examining engineer are given, but those which the
young and less experienced would ask the veteran, and which old hands ask as "stick-
It is a veritable Encyclopedia of the Locomotive, is entirely free from mathe-
matics, easily understood and thoroughly up-to-date. Contains over 4,000 Examina-
tion Questions with their Answers.
plates. 28th Revised Edition.
825 pages, 437 illustrations and three folding

ers.

$2.50

Practical

PRACTICAL INSTRUCTOR AND REFERENCE BOOK FOR LOCOMOTIVE FIREMEN AND ENGINEERS. By CHAS. F. LOCKHART. An entirely new book on the Locomotive. tells him how things are done and the right way to do them. has had years of practical experience in locomotive shops and on the road firing and It appeals to every railroad man, as it running. The information given in this book cannot be found in any other similar treatise. Written by a man who Eight hundred and fifty-one questions with their answers are included, which will prove specially helpful to those preparing for examination. information on: The Construction and Operation of Locomotives; Breakdowns and their Remedies; Air Brakes and Valve Gears. thorough manner. into six parts, as follows: 1. The Fireman's Duties. As a book of reference it cannot be excelled. Rules and Signals are handled in a Locomotive. from Standard Rules. 3. Breakdowns and their Remedies. The book is divided 2. General Description of the carefully selected and arranged. 6. Questions for Examination. 4. Air Brakes. different railroads. 368 pages. 5. Extracts These cover the examinations required by the The 851 questions have beer 88 illustrations. Price

$1.50

PREVENTION OF RAILROAD ACCIDENTS, OR SAFETY IN RAILROADING.
By GEORGE BRADSHAW.

This book is a heart-to-heart talk with Railroad Employees, dealing with facts, not
theories, and showing the men in the ranks, from every-day experience, how accidents
occur and how they may be avoided.
photographs and drawings showing the safe and unsafe methods of work. No vision-
The book is illustrated with seventy original
ary schemes, no ideal pictures.
Every railroad employee who reads the book is a better and safer man to have in
Just plain facts and Practical Suggestions are given.
railroad service.
many injuries and deaths.
It gives just the information which will be the means of preventing
and do your part in preventing accidents.
All railroad employees should procure a copy; read it,
Price.
169 pages. Pocket size. Fully illustrated.

50 cents

TRAIN RULE EXAMINATIONS MADE EASY. By G. E. COLLINGWOOD. This is the only practical work on train rules in print. Every detail is covered, and puzzling points are explained in simple, comprehensive language, making it a practica. treatise for the Train Dispatcher, Engineman, Trainman, and all others who have to do with the movements of trains. the different roads. Explains fully the practical application of train orders, giving a Contains complete and reliable information of the Shows Signals in Colors, as used on

Standard Code of Train Rules for single track.

22