Aviation Engines: Design—Construction—Operation and Repair

Chapter V: Industrial Application of Storage Batteries; (1)

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Glossary of Storage Battery Terms. 208 Pages. Very Fully
Illustrated. Price =$1.50 net=.

=Motorcycles, Side Cars and Cyclecars; their Construction, Management and Repair.= By VICTOR W. PAGE, M.S.A.E.

The only complete work published for the motorcyclist and
cyclecarist. Describes fully all leading types of machines,
their design, construction, maintenance, operation and repair.
This treatise outlines fully the operation of two- and
four-cycle power plants and all ignition, carburetion and
lubrication systems in detail. Describes all representative
types of free engine clutches, variable speed gears and power
transmission systems. Gives complete instructions for operating
and repairing all types. Considers fully electric self-starting
and lighting systems, all types of spring frames and spring
forks and shows leading control methods. For those desiring
technical information a complete series of tables and many
formulae to assist in designing are included. The work tells how
to figure power needed to climb grades, overcome air resistance
and attain high speeds. It shows how to select gear ratios for
various weights and powers, how to figure braking efficiency
required, gives sizes of belts and chains to transmit power
safely, and shows how to design sprockets, belt pulleys, etc.
This work also includes complete formulae for figuring
horse-power, shows how dynamometer tests are made, defines
relative efficiency of air and water-cooled engines, plain and
anti-friction bearings and many other data of a practical,
helpful, engineering nature. Remember that you get this
information in addition to the practical description and
instructions which alone are worth several times the price of
the book. 550 pages. 350 specially made illustrations, 5 folding
plates. Cloth. Price =$1.50=

WHAT IS SAID OF THIS BOOK:

"Here is a book that should be in the cycle repairer's
kit."--_American Blacksmith._

"The best way for any rider to thoroughly understand his
machine, is to get a copy of this book; it is worth many times
its price."--_Pacific Motorcyclist._

~AUTOMOBILE AND MOTORCYCLE CHARTS~

=Chart. Location of Gasoline Engine Troubles Made Easy--A Chart Showing Sectional View of Gasoline Engine.= Compiled by VICTOR W. PAGE, M.S.A.E.

It shows clearly all parts of a typical four-cylinder gasoline
engine of the four-cycle type.

It outlines distinctly all parts liable to give trouble and also
details the derangements apt to interfere with smooth engine
operation.

Valuable to students, motorists, mechanics, repairmen,
garagemen, automobile salesmen, chauffeurs, motorboat owners,
motor-truck and tractor drivers, aviators, motor-cyclists, and
all others who have to do with gasoline power plants.

It simplifies location of all engine troubles, and while it will
prove invaluable to the novice, it can be used to advantage by
the more expert. It should be on the walls of every public and
private garage, automobile repair shop, club house or school. It
can be carried in the automobile or pocket with ease, and will
insure against loss of time when engine trouble manifests
itself.

This sectional view of engine is a complete review of all motor
troubles. It is prepared by a practical motorist for all who
motor. More information for the money than ever before offered.
No details omitted. Size 25x38 inches. Securely mailed on
receipt of =25 Cents=

=Chart. Location of Ford Engine Troubles Made Easy.= Compiled by VICTOR W. PAGE, M.S.A.E.

This shows clear sectional views depicting all portions of the
Ford power plant and auxiliary groups. It outlines clearly all
parts of the engine, fuel supply system, ignition group and
cooling system, that are apt to give trouble, detailing all
derangements that are liable to make an engine lose power, start
hard or work irregularly. This chart is valuable to students,
owners, and drivers, as it simplifies location of all engine
faults. Of great advantage as an instructor for the novice, it
can be used equally well by the more expert as a work of
reference and review. It can be carried in the tool-box or
pocket with ease and will save its cost in labor eliminated the
first time engine trouble manifests itself. Prepared with
special reference to the average man's needs and is a practical
review of all motor troubles because it is based on the actual
experience of an automobile engineer-mechanic with the mechanism
the chart describes. It enables the non-technical owner or
operator of a Ford car to locate engine derangements by
systematic search, guided by easily recognized symptoms instead
of by guesswork. It makes the average owner independent of the
roadside repair shop when touring. Must be seen to be
appreciated. Size 25x38 inches. Printed on heavy bond paper.
Price =25 cents=

=Chart. Lubrication of the Motor Car Chassis.= Compiled by VICTOR W. PAGE, M.S.A.E.

This chart presents the plan view of a typical six-cylinder
chassis of standard design and all parts are clearly indicated
that demand oil, also the frequency with which they must be
lubricated and the kind of oil to use. A practical chart for all
interested in motor-car maintenance. Size 24x38 inches. Price
=25 cents=

=Chart. Location of Carburetion Troubles Made Easy.= Compiled by VICTOR W. PAGE, M.S.A.E.

This chart shows all parts of a typical pressure feed fuel
supply system and gives causes of trouble, how to locate defects
and means of remedying them. Size 24x38 inches. Price =25 cents=

=Chart. Location of Ignition System Troubles Made Easy.= Compiled by VICTOR W. PAGE, M.S.A.E.

In this diagram all parts of a typical double ignition system
using battery and magneto current are shown, and suggestions are
given for readily finding ignition troubles and eliminating them
when found. Size 24x38 inches. Price =25 cents=

=Chart. Location of Cooling and Lubrication System Faults.= Compiled by VICTOR W. PAGE, M.S.A.E.

This composite diagram shows a typical automobile power plant
using pump circulated water-cooling system and the most popular
lubrication method. Gives suggestions for curing all overheating
and loss of power faults due to faulty action of the oiling or
cooling group. Size 24x38 inches. Price =25 cents=

=Chart. Motorcycle Troubles Made Easy.= Compiled by VICTOR W PAGE, M.S.A.E.

A chart showing sectional view of a single-cylinder gasoline
engine. This chart simplifies location of all power-plant
troubles. A single-cylinder motor is shown for simplicity. It
outlines distinctly all parts liable to give trouble and also
details the derangements apt to interfere with smooth engine
operation. This chart will prove of value to all who have to do
with the operation, repair or sale of motorcycles. No details
omitted. Size 30x20 inches Price =25 cents=

~AVIATION~

=Aviation Engines, their Design, Construction, Operation and Repair.= By Lieut. VICTOR W. PAGE, Aviation Section, S.C.U.S.R.

A practical work containing valuable instructions for aviation
students, mechanicians, squadron engineering officers and all
interested in the construction and upkeep of airplane power
plants.

The rapidly increasing interest in the study of aviation, and
especially of the highly developed internal combustion engines
that make mechanical flight possible, has created a demand for a
text-book suitable for schools and home study that will clearly
and concisely explain the workings of the various aircraft
engines of foreign and domestic manufacture.

This treatise, written by a recognized authority on all of the
practical aspects of internal combustion engine construction,
maintenance and repair fills the need as no other book does.

The matter is logically arranged; all descriptive matter is
simply expressed and copiously illustrated so that anyone can
understand airplane engine operation and repair even if without
previous mechanical training. This work is invaluable for anyone
desiring to become an aviator or aviation mechanician.

The latest rotary types, such as the Gnome, Monosoupape, and Le
Rhone, are fully explained, as well as the recently developed
Vee and radial types. The subjects of carburetion, ignition,
cooling and lubrication also are covered in a thorough manner.
The chapters on repair and maintenance are distinctive and found
in no other book on this subject.

Invaluable to the student, mechanic and soldier wishing to enter
the aviation service.

Not a technical book, but a practical, easily understood work of
reference for all interested in aeronautical science. 576 octavo
pages. 253 specially made engravings. Price =$3.00 net=

~GLOSSARY OF AVIATION TERMS~

=Termes D'Aviation, English-French, French-English.= Compiled by Lieuts. VICTOR W. PAGE, A.S., S.C.U.S.R., and PAUL MONTARIOL of the French Flying Corps, on duty on Signal Corps Aviation School, Mineola, L. I.

A complete, well illustrated volume intended to facilitate
conversation between English-speaking and French aviators. A
very valuable book for all who are about to leave for duty
overseas.

Approved for publication by Major W. G. Kilner, S.C., U.S.C.O.
Signal Corps Aviation School. Hazelhurst Field, Mineola, L. I.

This book should be in every Aviator's and Mechanic's Kit for
ready reference. 128 pages. Fully illustrated with detailed
engravings. Price =$1.00=

=Aviation Chart. Location of Airplane Power Plant Troubles Made Easy.= By Lieut. VICTOR W. PAGE, A.S., S.C.U.S.R.

A large chart outlining all parts of a typical airplane power
plant, showing the points where trouble is apt to occur and
suggesting remedies for the common defects. Intended especially
for Aviators and Aviation Mechanics on School and Field Duty.
Price =50 cents=

~BRAZING AND SOLDERING~

=Brazing and Soldering.= By JAMES F. HOBART.

The only book that shows you just how to handle any job of
brazing or soldering that comes along; it tells you what mixture
to use, how to make a furnace if you need one. Full of valuable
kinks. The fifth edition of this book has just been published,
and to it much new matter and a large number of tested formulae
for all kinds of solders and fluxes have been added.
Illustrated. Price =25 cents=

~CHARTS~

=Aviation Chart. Location of Airplane Power Plant Troubles Made Easy.= By Lieut. VICTOR W. PAGE, A.S., S.C.U.S.R.

=Gasoline Engine Troubles Made Easy--A Chart Showing Sectional View of Gasoline Engine.= Compiled by Lieut. VICTOR W. PAGE, A.S., S.C.U.S.R.

It shows clearly all parts of a typical four-cylinder gasoline
engine of the four-cycle type. It outlines distinctly all parts
liable to give trouble and also details the derangements apt to
interfere with smooth engine operation.

Valuable to students, motorists, mechanics, repairmen,
garagemen, automobile salesmen, chauffeurs, motor-boat owners,
motor-truck and tractor drivers, aviators, motor-cyclists, and
all others who have to do with gasoline power plants.

It simplifies location of all engine troubles, and while it will
prove invaluable to the novice, it can be used to advantage by
the more expert. It should be on the walls of every public and
private garage, automobile repair shop, club house or school. It
can be carried in the automobile or pocket with ease and will
insure against loss of time when engine trouble manifests
itself.

This sectional view of engine is a complete review of all motor
troubles. It is prepared by a practical motorist for all who
motor. No details omitted. Size 25x38 inches. Price =25 cents=

=Lubrication of the Motor Car Chassis.=

=Location of Carburetion Troubles Made Easy.=

This chart shows all parts of a typical pressure feed fuel
supply system and gives causes of trouble, how to locate defects
and means of remedying them. Size 24x38 inches. Price =25 cents=

=Location of Ignition System Troubles Made Easy.=

In this chart all parts of a typical double ignition system
using battery and magneto current are shown and suggestions are
given for readily finding ignition troubles and eliminating them
when found. Size 24x38 inches. Price =25 cents=

=Location of Cooling and Lubrication System Faults.=

This composite chart shows a typical automobile power plant
using pump circulated water-cooling system and the most popular
lubrication method. Gives suggestions for curing all overheating
and loss of power faults due to faulty action of the oiling or
cooling group. Size 24x38 inches. Price =25 Cents=

=Motorcycle Troubles Made Easy--A Chart Showing Sectional View of Single-Cylinder Gasoline Engine.= Compiled by VICTOR W. PAGE, M.S.A.E.

This chart simplifies location of all power-plant troubles, and
will prove invaluable to all who have to do with the operation,
repair or sale of motorcycles. No details omitted. Size 25x38
inches. Price =25 cents=

=Location of Ford Engine Troubles Made Easy.= Compiled by VICTOR W. PAGE, M.S.A.E.

This shows clear sectional views depicting all portions of the
Ford power plant and auxiliary groups. It outlines clearly all
parts of the engine, fuel supply system, ignition group and
cooling system, that are apt to give trouble, detailing all
derangements that are liable to make an engine lose power, start
hard or work irregularly. This chart is valuable to students,
owners, and drivers, as it simplifies location of all engine
faults. Of great advantage as an instructor for the novice, it
can be used equally well by the more expert as a work of
reference and review. It can be carried in the toolbox or pocket
with ease and will save its cost in labor eliminated the first
time engine trouble manifests itself. Prepared with special
reference to the average man's needs and is a practical review
of all motor troubles because it is based on the actual
experience of an automobile engineer-mechanic with the mechanism
the chart describes. It enables the non-technical owner or
operator of a Ford car to locate engine derangements by
systematic search, guided by easily recognized symptoms instead
of by guesswork. It makes the average owner independent of the
roadside repair shop when touring. Must be seen to be
appreciated. Size 25x38 inches. Printed on heavy bond paper.
Price =25 cents=

=Modern Submarine Chart--with Two Hundred Parts Numbered and Named.=

A cross-section view, showing clearly and distinctly all the
interior of a Submarine of the latest type. You get more
information from this chart, about the construction and
operation of a Submarine, than in any other way. No details
omitted--everything is accurate and to scale. It is absolutely
correct in every detail, having been approved by Naval
Engineers. All the machinery and devices fitted in a modern
Submarine Boat are shown, and to make the engraving more readily
understood all the features are shown in operative form, with
Officers and Men in the act of performing the duties assigned to
them in service conditions. This CHART IS REALLY AN ENCYCLOPEDIA
OF A SUBMARINE. It is educational and worth many times its cost.
Mailed in a Tube for =25 Cents=

=Box Car Chart.=

A chart showing the anatomy of a box car, having every part of
the car numbered and its proper name given in a reference list.
Price =25 Cents=

=Gondola Car Chart.=

A chart showing the anatomy of a gondola car, having every part
of the car numbered and its proper reference name given in a
reference list. Price =25 Cents=

=Passenger-Car Chart.=

A chart showing the anatomy of a passenger-car, having every
part of the car numbered and its proper name given in a
reference list =25 Cents=

=Steel Hopper Bottom Coal Car.=

A chart showing the anatomy of a steel Hopper Bottom Coal Car,
having every part of the car numbered and its proper name given
in a reference list. Price =25 Cents=

=Tractive Power Chart.=

A chart whereby you can find the tractive power or drawbar pull
of any locomotive without making a figure. Shows what cylinders
are equal, how driving wheels and steam pressure affect the
power. What sized engine you need to exert a given drawbar pull
or anything you desire in this line. Price =50 Cents=

=Horse-Power Chart.=

Shows the horse-power of any stationary engine without
calculation. No matter what the cylinder diameter of stroke, the
steam pressure of cut-off, the revolutions, or whether
condensing or non-condensing, it's all there. Easy to use,
accurate, and saves time and calculations. Especially useful to
engineers and designers. Price =50 Cents=

=Boiler Room Chart.= By GEO. L. FOWLER.

A chart--size 14x28 inches--showing in isometric perspective the
mechanisms belonging in a modern boiler room. The various parts
are shown broken or removed, so that the internal construction
is fully illustrated. Each part is given a reference number, and
these, with the corresponding name, are given in a glossary
printed at the sides. This chart is really a dictionary of the
boiler room--the names of more than 200 parts being given. Price
=25 Cents=

~COKE~

=Modern Coking Practice, Including Analysis of Materials and Products.=

By J. E. CHRISTOPHER and T. H. BYROM.

This, the standard work on the subject, has just been revised.
It is a practical work for those engaged in Coke manufacture and
the recovery of By-products. Fully illustrated with folding
plates. It has been the aim of the authors, in preparing this
book, to produce one which shall be of use and benefit to those
who are associated with, or interested in, the modern
developments of the industry. Among the Chapters contained in
Volume I are: Introduction; Classification of Fuels; Impurities
of Coals; Coal Washing; Sampling and Valuation of Coals, etc.;
Power of Fuels; History of Coke Manufacture; Developments in the
Coke Oven Design; Recent Types of Coke Ovens; Mechanical
Appliances at Coke Ovens; Chemical and Physical Examination of
Coke. Volume II covers fully the subject of By-Products. Price,
per volume =$3.00 net=

~COMPRESSED AIR~

=Compressed Air in All Its Applications.= By GARDNER D. HISCOX.

This is the most complete book on the subject of Air that has
ever been issued, and its thirty-five chapters include about
every phase of the subject one can think of. It may be called an
encyclopedia of compressed air. It is written by an expert, who,
in its 665 pages, has dealt with the subject in a comprehensive
manner, no phase of it being omitted. Includes the physical
properties of air from a vacuum to its highest pressure, its
thermodynamics, compression, transmission and uses as a motive
power, in the Operation of Stationary and Portable Machinery, in
Mining, Air Tools, Air Lifts, Pumping of Water, Acids, and Oils;
the Air Blast for Cleaning and Painting the Sand Blast and its
Work, and the Numerous Appliances in which Compressed Air is a
Most Convenient and Economical Transmitter of Power for
Mechanical Work, Railway Propulsion, Refrigeration, and the
Various Uses to which Compressed Air has been applied. Includes
forty-four tables of the physical properties of air, its
compression, expansion, and volumes required for various kinds
of work, and a list of patents on compressed air from 1875 to
date. Over 500 illustrations, 5th Edition, revised and enlarged.

Cloth bound. Price =$5.00=

Half Morocco. Price =$6.50=

~CONCRETE~

=Concrete Workers' Reference Books. A Series of Popular Handbooks for Concrete Users.= Prepared by A. A. HOUGHTON =50 cents=

_The author, in preparing this Series, has not only treated on
the usual types of construction, but explains and illustrates
molds and systems that are not patented, but which are equal in
value and often superior to those restricted by patents. These
molds are very easily and cheaply constructed and embody
simplicity, rapidity of operation, and the most successful
results in the molded concrete. Each of these books is fully
illustrated, and the subjects are exhaustively treated in plain
English._

=Concrete Wall Forms.= By A. A. HOUGHTON.

A new automatic wall clamp is illustrated with working drawings.
Other types of wall forms, clamps, separators, etc., are also
illustrated and explained. (No. 1 of Series) Price =50 cents=

=Concrete Floors and Sidewalks.= By A. A. HOUGHTON.

The molds for molding squares, hexagonal and many other styles
of mosaic floor and sidewalk blocks are fully illustrated and
explained. (No. 2 of Series) Price =50 cents=

=Practical Concrete Silo Construction.= By A. A. HOUGHTON.

Complete working drawings and specifications are given for
several styles of concrete silos, with illustrations of molds
for monolithic and block silos. The tables, data, and
information presented in this book are of the utmost value in
planning and constructing all forms of concrete silos. (No. 3 of
Series) Price =50 cents=

=Molding Concrete Chimneys, Slate and Hoof Tiles.= By A. A. HOUGHTON.

The manufacture of all types of concrete slate and roof tile is
fully treated. Valuable data on all forms of reinforced concrete
roofs are contained within its pages. The construction of
concrete chimneys by block and monolithic systems is fully
illustrated and described. A number of ornamental designs of
chimney construction with molds are shown in this valuable
treatise. (No. 4 of Series.) Price =50 cents=

=Molding and Curing Ornamental Concrete.= By A. A. HOUGHTON.

The proper proportions of cement and aggregates for various
finishes, also the method of thoroughly mixing and placing in
the molds, are fully treated. An exhaustive treatise on this
subject that every concrete worker will find of daily use and
value. (No. 5 of Series.) Price =50 cents=

=Concrete Monuments, Mausoleums and Burial Vaults.= By A. A. HOUGHTON.

The molding of concrete monuments to imitate the most expensive
cut stone is explained in this treatise with working drawings of
easily built molds. Cutting inscriptions and designs are also
fully treated. (No. 6 of Series.) Price =50 cents=

=Molding Concrete Bathtubs, Aquariums and Natatoriums.= By A. A. HOUGHTON.

Simple molds and instruction are given for molding many styles
of concrete bathtubs, swimming-pools, etc. These molds are
easily built and permit rapid and successful work. (No. 7 of
Series.) Price =50 cents=

=Concrete Bridges, Culverts and Sewers.= By A. A. HOUGHTON.

A number of ornamental concrete bridges with illustrations of
molds are given. A collapsible center or core for bridges,
culverts and sewers is fully illustrated with detailed
instructions for building. (No. 8 of Series.) Price =50 cents=

=Constructing Concrete Porches.= By A. A. HOUGHTON.

A number of designs with working drawings of molds are fully
explained so any one can easily construct different styles of
ornamental concrete porches without the purchase of expensive
molds. (No. 9 of Series.) Price =50 cents=

=Molding Concrete Flower-Pots, Boxes, Jardinieres, Etc.= By A. A. HOUGHTON.

The molds for producing many original designs of flower-pots,
urns, flower-boxes, jardinieres, etc., are fully illustrated and
explained, so the worker can easily construct and operate same.
(No. 10 of Series.) Price =50 cents=

=Molding Concrete Fountains and Lawn Ornaments.= By A. A. HOUGHTON.

The molding of a number of designs of lawn seats, curbing,
hitching posts, pergolas, sun dials and other forms of
ornamental concrete for the ornamentation of lawns and gardens,
is fully illustrated and described. (No. 11 of Series.) Price
=50 cents=

=Concrete from Sand Molds.= By A. A. HOUGHTON.

A Practical Work treating on a process which has heretofore been
held as a trade secret by the few who possessed it, and which
will successfully mold every and any class of ornamental
concrete work. The process of molding concrete with sand molds
is of the utmost practical value, possessing the manifold
advantages of a low cost of molds, the ease and rapidity of
operation, perfect details to all ornamental designs, density
and increased strength of the concrete, perfect curing of the
work without attention and the easy removal of the molds
regardless of any undercutting the design may have. 192 pages.
Fully illustrated Price =$2.00=

=Ornamental Concrete without Molds.= By A. A. HOUGHTON.

The process for making ornamental concrete without molds has
long been held as a secret, and now, for the first time, this
process is given to the public. The book reveals the secret and
is the only book published which explains a simple, practical
method whereby the concrete worker is enabled, by employing wood
and metal templates of different designs, to mold or model in
concrete any Cornice, Archivolt, Column, Pedestal, Base Cap, Urn
or Pier in a monolithic form--right upon the job. These may be
molded in units or blocks and then built up to suit the
specifications demanded. This work is fully illustrated, with
detailed engravings. Price =$2.00=

=Concrete for the Farm and in the Shop.= By H. COLIN CAMPBELL, C.E., E.M.

"Concrete for the Farm and in the Shop" is a new book from cover
to cover, illustrating and describing in plain, simple language
many of the numerous applications of concrete within the range
of the home worker. Among the subjects treated are: Principles
of Reinforcing; Methods of Protecting Concrete so as to Insure
Proper Hardening; Home-made Mixers; Mixing by Hand and Machine;
Form Construction, Described and Illustrated by Drawings and
Photographs; Construction of Concrete Walls and Fences; Concrete
Fence Posts; Concrete Gate Posts; Corner Posts; Clothes Line
Posts; Grape Arbor Posts; Tanks; Troughs; Cisterns; Hog Wallows;
Feeding Floors and Barnyard Pavements; Foundations; Well Curbs
and Platforms; Indoor Floors; Sidewalks; Steps; Concrete Hotbeds
and Cold Frames; Concrete Slab Roofs; Walls for Buildings;
Repairing Leaks in Tanks and Cisterns; and all topics associated
with these subjects as bearing upon securing the best results
from concrete are dwelt upon at sufficient length in plain
every-day English so that the inexperienced person desiring to
undertake a piece of concrete construction can, by following the
directions set forth in this book, secure 100 per cent. success
every time. A number of convenient and practical tables for
estimating quantities, and some practical examples, are also
given. (5x7.) 149 pages. 51 illustrations. Price =75 cents=

=Popular Handbook for Cement and Concrete Users.= By MYRON H. LEWIS.

This is a concise treatise of the principles and methods
employed in the manufacture and use of cement in all classes of
modern works. The author has brought together in this work all
the salient matter of interest to the user of concrete and its
many diversified products. The matter is presented in logical
and systematic order, clearly written, fully illustrated and
free from involved mathematics. Everything of value to the
concrete user is given, including kinds of cement employed in
construction, concrete architecture, inspection and testing,
waterproofing, coloring and painting, rules, tables, working and
cost data. The book comprises thirty-three chapters, as follow:
Introductory. Kinds of Cement and How They are Made. Properties.
Testing and Requirements of Hydraulic Cement. Concrete and Its
Properties. Sand, Broken Stone and Gravel for Concrete. How to
Proportion the Materials. How to Mix and Place Concrete. Forms
of Concrete Construction. The Architectural and Artistic
Possibilities of Concrete. Concrete Residences. Mortars,
Plasters and Stucco, and How to Use Them. The Artistic Treatment
of Concrete Surfaces. Concrete Building Blocks. The Making of
Ornamental Concrete. Concrete Pipes, Fences, Posts, etc.
Essential Features and Advantages of Reenforced Concrete. How to
Design Reenforced Concrete Beams, Slabs and Columns.
Explanations of the Methods and Principles in Designing
Reenforced Concrete, Beams and Slabs. Systems of Reenforcement
Employed. Reenforced Concrete in Factory and General Building
Construction. Concrete in Foundation Work. Concrete Retaining
Walls, Abutments and Bulkheads. Concrete Arches and Arch
Bridges. Concrete Beam and Girder Bridges. Concrete in Sewerage
and Draining Works. Concrete Tanks, Dams and Reservoirs.
Concrete Sidewalks, Curbs and Pavements. Concrete in Railroad
Construction. The Utility of Concrete on the Farm. The
Waterproofing of Concrete Structures. Grout of Liquid Concrete
and Its Use. Inspection of Concrete Work. Cost of Concrete Work.
Some of the special features of the book are: 1.--The Attention
Paid to the Artistic and Architectural Side of Concrete Work.
2.--The Authoritative Treatment of the Problem of Waterproofing
Concrete. 3.--An Excellent Summary of the Rules to be Followed
in Concrete Construction. 4.--The Valuable Cost Data and Useful
Tables given. A valuable Addition to the Library of Every Cement
and Concrete User. Price =$2.50=

WHAT IS SAID OF THIS BOOK:

"The field of Concrete Construction is well covered and the
matter contained is well within the understanding of any
person."--_Engineering-Contracting._

"Should be on the bookshelves of every contractor, engineer, and
architect in the land."--_National Builder._

=Waterproofing Concrete.= By MYRON H. LEWIS.

Modern Methods of Waterproofing Concrete and Other Structures. A
condensed statement of the Principles, Rules, and Precautions to
be Observed in Waterproofing and Dampproofing Structures and
Structural Materials. Paper binding. Illustrated. Price =50
cents=

~DICTIONARIES~

=Aviation Terms, Termes D'Aviation, English-French, French-English.= Compiled by Lieuts. VICTOR W. PAGE, A.S., S.C.U.S.R., and PAUL MONTARIOL, of the French Flying Corps, on duty on Signal Corps Aviation School, Mineola, L. I.

The lists contained are confined to essentials, and special
folding plates are included to show all important airplane
parts. The lists are divided in four sections as follows:
1.--Flying Field Terms. 2.--The Airplane. 3.--The Engine.
4.--Tools and Shop Terms.

A complete, well illustrated volume intended to facilitate
conversation between English-speaking and French aviators. A
very valuable book for all who are about to leave for duty
overseas.

Approved for publication by Major W. G. Kilner, S.C., U.S.C.O.
Signal Corps Aviation School, Hazelhurst Field, Mineola, L. I.
This book should be in every Aviator's and Mechanic's Kit for
ready reference. 128 pages, fully illustrated, with detailed
engravings. Price =$1.00=

=Standard Electrical Dictionary.= By T. O'CONOR SLOANE.

~DIES--METAL WORK~

=Dies: Their Construction and Use for the Modern Working of Sheet Metals.= By J. V. WOODWORTH.

A most useful book, and one which should be in the hands of all
engaged in the press working of metals; treating on the
Designing, Constructing, and Use of Tools, Fixtures and Devices,
together with the manner in which they should be used in the
Power Press, for the cheap and rapid production of the great
variety of sheet-metal articles now in use. It is designed as a
guide to the production of sheet-metal parts at the minimum of
cost with the maximum of output. The hardening and tempering of
Press tools and the classes of work which may be produced to the
best advantage by the use of dies in the power press are fully
treated. Its 515 illustrations show dies, press fixtures and
sheet-metal working devices, the descriptions of which are so
clear and practical that all metal-working mechanics will be
able to understand how to design, construct and use them. Many
of the dies and press fixtures treated were either constructed
by the author or under his supervision. Others were built by
skilful mechanics and are in use in large sheet-metal
establishments and machine shops. 6th Revised and Enlarged
Edition. Price =$3.00=

=Punches, Dies and Tools for Manufacturing in Presses.= By J. V. WOODWORTH.

This work is a companion volume to the author's elementary work
entitled "Dies: Their Construction and Use." It does not go into
the details of die-making to the extent of the author's previous
book, but gives a comprehensive review of the field of
operations carried on by presses. A large part of the
information given has been drawn from the author's personal
experience. It might well be termed an Encyclopedia of
Die-Making, Punch-Making, Die-Sinking, Sheet-Metal Working, and
Making of Special Tools, Sub-presses, Devices and Mechanical
Combinations for Punching, Cutting, Bending, Forming, Piercing,
Drawing, Compressing and Assembling Sheet-Metal Parts, and also
Articles of other Materials in Machine Tools. 2d Edition. Price
=$4.00=

=Drop Forging, Die-Sinking and Machine-Forming of Steel.= By J. V. WOODWORTH.

This is a practical treatise on Modern Shop Practice, Processes,
Methods, Machine Tools, and Details treating on the Hot and Cold
Machine-Forming of Steel and Iron into Finished Shapes: together
with Tools, Dies, and Machinery involved in the manufacture of
Duplicate Forgings and Interchangeable Hot and Cold Pressed
Parts from Bar and Sheet Metal. This book fills a demand of long
standing for information regarding drop-forgings, die-sinking
and machine-forming of steel and the shop practice involved, as
it actually exists in the modern drop-forging shop. The
processes of die-sinking and force-making, which are thoroughly
described and illustrated in this admirable work, are rarely to
be found explained in such a clear and concise manner as is here
set forth. The process of die-sinking relates to the engraving
or sinking of the female or lower dies, such as are used for
drop-forgings, hot and cold machine-forging, swedging, and the
press working of metals. The process of force-making relates to
the engraving or raising of the male or upper dies used in
producing the lower dies for the press-forming and
machine-forging of duplicate parts of metal.

In addition to the arts above mentioned the book contains
explicit information regarding the drop-forging and hardening
plants, designs, conditions, equipment, drop hammers, forging
machines, etc., machine forging, hydraulic forging, autogenous
welding and shop practice. The book contains eleven chapters,
and the information contained in these chapters is just what
will prove most valuable to the forged-metal worker. All
operations described in the work are thoroughly illustrated by
means of perspective half-tones and outline sketches of the
machinery employed. 300 detailed illustrations. Price =$2.50=

~DRAWING--SKETCHING PAPER~

=Practical Perspective.= By RICHARDS and COLVIN.

Shows just how to make all kinds of mechanical drawings in the
only practical perspective isometric. Makes everything plain, so
that any mechanic can understand a sketch or drawing in this
way. Saves time in the drawing room, and mistakes in the shops.
Contains practical examples of various classes of work. 4th
Edition. Price =50 cents=

=Linear Perspective Self-Taught.= By HERMAN T. C. KRAUS.

This work gives the theory and practice of linear perspective,
as used in architectural, engineering and mechanical drawings.
Persons taking up the study of the subject by themselves will be
able, by the use of the instruction given, to readily grasp the
subject, and by reasonable practice become good perspective
draftsmen. The arrangement of the book is good; the plate is on
the left-hand, while the descriptive text follows on the
opposite page, so as to be readily referred to. The drawings are
on sufficiently large scale to show the work clearly and are
plainly figured. There is included a self-explanatory chart
which gives all information necessary for the thorough
understanding of perspective. This chart alone is worth many
times over the price of the book. 2d Revised and Enlarged
Edition. Price =$2.50=

=Self-Taught Mechanical Drawing and Elementary Machine Design.= By F. L. SYLVESTER, M.E., Draftsman, with additions by ERIK OBERG, associate editor of "Machinery."

This is a practical treatise on Mechanical Drawing and Machine
Design, comprising the first principles of geometric and
mechanical drawing, workshop mathematics, mechanics, strength of
materials and the calculations and design of machine details.
The author's aim has been to adapt this treatise to the
requirements of the practical mechanic and young draftsman and
to present the matter in as clear and concise a manner as
possible. To meet the demands of this class of students,
practically all the important elements of machine design have
been dealt with, and in addition algebraic formulas have been
explained, and the elements of trigonometry treated in the
manner best suited to the needs of the practical man. The book
is divided into 20 chapters, and in arranging the material,
mechanical drawing, pure and simple, has been taken up first, as
a thorough understanding of the principles of representing
objects facilitates the further study of mechanical subjects.
This is followed by the mathematics necessary for the solution
of the problems in machine design which are presented later, and
a practical introduction to theoretical mechanics and the
strength of materials. The various elements entering into
machine design, such as cams, gears, sprocket-wheels, cone
pulleys, bolts, screws, couplings, clutches, shafting and
fly-wheels, have been treated in such a way as to make possible
the use of the work as a text-book for a continuous course of
study. It is easily comprehended and assimilated even by
students of limited previous training. 330 pages, 215
engravings. Price =$2.00=

=A New Sketching Paper.=

A new specially ruled paper to enable you to make sketches or
drawings in isometric perspective without any figuring or
fussing. It is being used for shop details as well as for
assembly drawings, as it makes one sketch do the work of three,
and no workman can help seeing just what is wanted.

Pads of 40 sheets, 6x9 inches. Price =25 cents=
Pads of 40 sheets, 9x12 inches. Price =50 cents=
40 sheets, 12x18 inches. Price =$1.00=

~ELECTRICITY~

=Arithmetic of Electricity.= By Prof. T. O'CONOR SLOANE.

A practical treatise on electrical calculations of all kinds
reduced to a series of rules, all of the simplest forms, and
involving only ordinary arithmetic; each rule illustrated by one
or more practical problems, with detailed solution of each one.
This book is classed among the most useful works published on
the science of electricity, covering as it does the mathematics
of electricity in a manner that will attract the attention of
those who are not familiar with algebraical formulas. 20th
Edition. 160 pages. Price =$1.00=

=Commutator Construction.= By WM. BAXTER, JR.

The business end of any dynamo or motor of the direct current
type is the commutator. This book goes into the designing,
building, and maintenance of commutators, shows how to locate
troubles and how to remedy them; everyone who fusses with
dynamos needs this. 4th Edition. Price =25 cents=

=Dynamo Building for Amateurs, or How to Construct a Fifty-Watt Dynamo.= By ARTHUR J. WEED, Member of N. Y. Electrical Society.

A practical treatise showing in detail the construction of a
small dynamo or motor, the entire machine work of which can be
done on a small foot lathe. Dimensioned working drawings are
given for each piece of machine work, and each operation is
clearly described. This machine, when used as a dynamo, has an
output of fifty watts; when used as a motor it will drive a
small drill press or lathe. It can be used to drive a sewing
machine on any and all ordinary work. The book is illustrated
with more than sixty original engravings, showing the actual
construction of the different parts. Among the contents are
chapters on: 1. Fifty-Watt Dynamo. 2. Side Bearing Rods. 3.
Field Punching. 4. Bearings. 5. Commutator. 6. Pulley. 7. Brush
Holders. 8. Connection Board. 9. Armature Shaft. 10. Armature.
11. Armature Winding. 12. Field Winding. 13. Connecting and
starting.

Paper. Price =50 Cents=
Cloth. Price =$1.00=

=Electric Bells.= By M. B. SLEEPER.

A complete treatise for the practical worker in Installing,
Operating and Testing Bell Circuits, Burglar Alarms,
Thermostats, and other apparatus used with Electric Bells.

Both the electrician and the experimenter will find in this book
new material which is essential in their work. Tools, bells,
batteries, unusual circuits, burglar alarms, annunciator
systems, thermostats, circuit breakers, time alarms, and other
apparatus used in bell circuits are described from the
standpoints of their application, construction and repair. The
detailed instruction for building the apparatus will appeal to
the experimenter particularly.

The practical worker will find the chapter on Wiring,
Calculation of Wire Sizes and Magnet Winding, Upkeep of Systems,
and the Location of Faults, of the greatest value in their work.
Among the chapters are: Tools and Materials for Bell Work; How
and Why Bell Work; Batteries for Small Installations; Making
Bells and Push Buttons; Wiring Bell Systems; Construction of
Annunciators and Signals; Burglary Alarms and Auxiliary
Apparatus; More Elaborate Bell Systems; Finding Faults and
Remedying Them. 124 pages, fully illustrated. Price =50 cents=

=Electric Lighting and Heating Pocket Book.= By SYDNEY F. WALKER.

This book puts in convenient form useful information regarding
the apparatus which is likely to be attached to the mains of an
electrical company. Tables of units and equivalents are included
and useful electrical laws and formulas are stated. 438 pages,
300 engravings. Bound in leather. Pocket book form. Price
=$3.00=

=Electric Wiring, Diagrams and Switchboards.= By NEWTON HARRISON, with additions by THOMAS POPPE.

A thoroughly practical treatise covering the subject of Electric
Wiring in all its branches, deluding explanations and diagrams
which are thoroughly explicit and greatly simplify the subject.
Practical every-day problems in wiring are presented and the
method of obtaining intelligent results clearly shown. Only
arithmetic is used. Ohm's law is given a simple explanation with
reference to wiring for direct and alternating currents. The
fundamental principle of drop of potential in circuits is shown
with its various applications. The simple circuit is developed
with the position of mains, feeders and branches; their
treatment as a part of a wiring plan and their employment in
house wiring clearly illustrated. Some simple facts about
testing are included in connection with the wiring. Molding and
conduit work are given careful consideration; and switchboards
are systematically treated, built up and illustrated, showing
the purpose they serve, for connection with the circuits, and to
shunt and compound wound machines. The simple principles of
switchboard construction, the development of the switchboard,
the connections of the various instruments, including the
lightning arrester, are also plainly set forth.

Alternating current wiring is treated, with explanations of the
power factor, conditions calling for various sizes of wire, and
a simple way of obtaining the sizes for single-phase, two-phase
and three-phase circuits. This is the only complete work issued
showing and telling you what you should know about direct and
alternating current wiring. It is a ready reference. The work is
free from advanced technicalities and mathematics, arithmetic
being used throughout. It is in every respect a handy,
well-written, instructive, comprehensive volume on wiring for
the wireman, foreman, contractor, or electrician. 2nd Revised
Edition. 303 pages, 130 illustrations. Price =$1.50=

=Electric Furnaces and their Industrial Applications.= By J. WRIGHT.

This is a book which will prove of interest to many classes of
people: the manufacturer who desires to know what product can be
manufactured successfully in the electric furnace, the chemist
who wishes to post himself on the electro-chemistry, and the
student of science who merely looks into the subject from
curiosity. New, Revised and Enlarged Edition. 320 pages. Fully
illustrated, cloth. Price =$3.00=

=Electric Toy Making, Dynamo Building, and Electric Motor Construction.= By Prof. T. O'CONOR SLOANE.

This work treats of the making at home of electrical toys,
electrical apparatus, motors, dynamos, and instruments in
general, and is designed to bring within the reach of young and
old the manufacture of genuine and useful electrical appliances.
The work is especially designed for amateurs and young folks.

Thousands of our young people are daily experimenting, and
busily engaged in making electrical toys and apparatus of
various kinds. The present work is just what is wanted to give
the much needed information in a plain, practical manner, with
illustrations to make easy the carrying out of the work. 20th
Edition. Price =$1.00=

=Practical Electricity.= By Prof. T. O'CONOR SLOANE.

This work of 768 pages was previously known as Sloane's
Electricians' Hand Book, and is intended for the practical
electrician who has to make things go. The entire field of
electricity is covered within its pages. Among some of the
subjects treated are: The Theory of the Electric Current and
Circuit, Electro-Chemistry, Primary Batteries, Storage
Batteries, Generation and Utilization of Electric Powers,
Alternating Current, Armature Winding, Dynamos and Motors, Motor
Generators, Operation of the Central Station Switchboards,
Safety Appliances, Distribution of Electric Light and Power,
Street Mains, Transformers, Arc and Incandescent Lighting,
Electric Measurements, Photometry, Electric Railways, Telephony,
Bell-Wiring, Electric-Plating, Electric Heating, Wireless
Telegraphy, etc. It contains no useless theory; everything is to
the point. It teaches you just what you want to know about
electricity. It is the standard work published on the subject.
Forty-one chapters, 556 engravings. Price =$2.50=

=Electricity Simplified.= By Prof. T. O'CONOR SLOANE.

The object of "Electricity Simplified" is to make the subject as
plain as possible and to show what the modern conception of
electricity is; to show how two plates of different metal,
immersed in acid, can send a message around the globe; to
explain how a bundle of copper wire rotated by a steam engine
can be the agent in lighting our streets; to tell what the volt,
ohm and ampere are, and what high and low tension mean; and to
answer the questions that perpetually arise in the mind in this
age of electricity. 13th Edition. 172 pages. Illustrated. Price
=$1.00=

=House Wiring.= By THOMAS W. POPPE.

This work describes and illustrates the actual installation of
Electric Light Wiring, the manner in which the work should be
done, and the method of doing it. The book can be conveniently
carried in the pocket. It is intended for the Electrician,
Helper and Apprentice. It solves all Wiring Problems and
contains nothing that conflicts with the rulings of the National
Board of Fire Underwriters. It gives just the information
essential to the Successful Wiring of a Building. Among the
subjects treated are: Locating the Meter. Panel-Boards.
Switches. Plug Receptacles. Brackets. Ceiling Fixtures. The
Meter Connections. The Feed Wires. The Steel Armored Cable
System. The Flexible Steel Conduit System. The Ridig Conduit
System. A digest of the National Board of Fire Underwriters'
rules relating to metallic wiring systems. Various switching
arrangements explained and diagrammed. The easiest method of
testing the Three- and Four-way circuits explained. The
grounding of all metallic wiring systems and the reason for
doing so shown and explained. The insulation of the metal parts
of lamp fixtures and the reason for the same described and
illustrated. 125 pages. 2nd Edition, revised and enlarged. Fully
illustrated. Flexible cloth. Price =50 cents=

=How to Become a Successful Electrician.= By Prof. T. O'CONOR SLOANE.

Every young man who wishes to become a successful electrician
should read this book. It tells in simple language the surest
and easiest way to become a successful electrician. The studies
to be followed, methods of work, field of operation and the
requirements of the successful electrician are pointed out and
fully explained. Every young engineer will find this an
excellent stepping stone to more advanced works on electricity
which he must master before success can be attained. Many young
men become discouraged at the very outstart by attempting to
read and study books that are far beyond their comprehension.
This book serves as the connecting link between the rudiments
taught in the public schools and the real study of electricity.
It is interesting from cover to cover. 18th Revised Edition,
just issued. 205 pages. Illustrated. Price =$1.00=

=Management of Dynamos.= By LUMMIS-PATERSON.

A handbook of theory and practice. This work is arranged in
three parts. The first part covers the elementary theory of the
dynamo. The second part, the construction and action of the
different classes of dynamos in common use are described; while
the third part relates to such matters as affect the practical
management and working of dynamos and motors. 4th Edition. 292
pages, 117 illustrations. Price =$1.50=

=Standard Electrical Dictionary.= By T. O'CONOR SLOANE.

An indispensable work to all interested in electrical science.
Suitable alike for the student and professional. A practical
handbook of reference containing definitions of about 5,000
distinct words, terms and phrases. The definitions are terse and
concise and include every term used in electrical science.
Recently issued. An entirely new edition. Should be in the
possession of all who desire to keep abreast with the progress
of this branch of science. In its arrangement and typography the
book is very convenient. The word or term defined is printed in
black-faced type, which readily catches the eye, while the body
of the page is in smaller but distinct type. The definitions are
well worded, and so as to be understood by the non-technical
reader. The general plan seems to be to give an exact, concise
definition, and then amplify and explain in a more popular way.
Synonyms are also given, and references to other words and
phrases are made. A very complete and accurate index of fifty
pages is at the end of the volume; and as this index contains
all synonyms, and as all phrases are indexed in every reasonable
combination of words, reference to the proper place in the body
of the book is readily made. It is difficult to decide how far a
book of this character is to keep the dictionary form, and to
what extent it may assume the encyclopedia form. For some
purposes, concise, exactly worded definitions are needed; for
other purposes, more extended descriptions are required. This
book seeks to satisfy both demands, and does it with
considerable success. 682 pages, 393 illustrations. 12th
Edition. Price =$3.00=

=Storage Batteries Simplified.= By VICTOR W. PAGE, M.E.

A complete treatise on storage battery operating principles,
repairs and applications. The greatly increasing application of
storage batteries in modern engineering and mechanical work has
created a demand for a book that will consider this subject
completely and exclusively. This is the most thorough and
authoritative treatise ever published on this subject. It is
written in easily understandable, non-technical language so that
any one may grasp the basic principles of storage battery action
as well as their practical industrial applications. All electric
and gasoline automobiles use storage batteries. Every automobile
repairman, dealer or salesman should have a good knowledge of
maintenance and repair of these important elements of the motor
car mechanism. This book not only tells how to charge, care for
and rebuild storage batteries but also outlines all the
industrial uses. Learn how they run street cars, locomotives and
factory trucks. Get an understanding of the important functions
they perform in submarine boats, isolated lighting plants,
railway switch and signal systems, marine applications, etc.
This book tells how they are used in central station standby
service, for starting automobile motors and in ignition systems.
Every practical use of the modern storage battery is outlined in
this treatise. 320 pages, fully illustrated. Price =$1.50=

=Switchboards.= By WILLIAM BAXTER, JR.

This book appeals to every engineer and electrician who wants to
know the practical side of things. It takes up all sorts and
conditions of dynamos, connections and circuits, and shows by
diagram and illustration just how the switchboard should be
connected. Includes direct and alternating current boards, also
those for arc lighting, incandescent and power circuits. Special
treatment on high voltage boards for power transmission. 2nd
Edition. 190 pages, Illustrated. Price =$1.50=

=Telephone Construction, Installation, Wiring, Operation and Maintenance.= By W. H. RADCLIFFE and H. C. CUSHING.

This book is intended for the amateur, the wireman, or the
engineer who desires to establish a means of telephonic
communication between the rooms of his home, office, or shop. It
deals only with such things as may be of use to him rather than
with theories.

Gives the principles of construction and operation of both the
Bell and Independent instruments; approved methods of installing
and wiring them; the means of protecting them from lightning and
abnormal currents; their connection together for operation as
series or bridging stations; and rules for their inspection and
maintenance. Line wiring and the wiring and operation of special
telephone systems are also treated. Intricate mathematics are
avoided, and all apparatus, circuits and systems are thoroughly
described. The appendix contains definitions of units and terms
used in the text. Selected wiring tables, which are very
helpful, are also included. Among the subjects treated are
Construction, Operation, and Installation of Telephone
Instruments; Inspection and Maintenance of Telephone
Instruments; Telephone Line Wiring; Testing Telephone Line Wires
and Cables; Wiring and Operation of Special Telephone Systems,
etc. 2nd Edition, Revised and Enlarged. 223 pages, 154
illustrations. Price =$1.00=

=Wireless Telegraphy and Telephony Simply Explained.= By ALFRED P. MORGAN.

This is undoubtedly one of the most complete and comprehensible
treatises on the subject ever published, and a close study of
its pages will enable one to master all the details of the
wireless transmission of messages. The author has filled a
long-felt want and has succeeded in furnishing a lucid,
comprehensible explanation in simple language of the theory and
practice of wireless telegraphy and telephony.

Among the contents are: Introductory; Wireless Transmission and
Reception--The Aerial System, Earth Connections--The
Transmitting Apparatus, Spark Coils and Transformers,
Condensers, Helixes, Spark Gaps, Anchor Gaps, Aerial
Switches--The Receiving Apparatus, Detectors, etc.--Tuning and
Coupling, Tuning Coils, Loose Couplers, Variable Condensers,
Directive Wave Systems--Miscellaneous Apparatus, Telephone
Receivers, Range of Stations, Static Interference--Wireless
Telephones, Sound and Sound Waves, The Vocal Cords and
Ear--Wireless Telephone, How Sounds Are Changed into Electric
Waves--Wireless Telephones, The Apparatus--Summary. 154 pages,
156 engravings. Price =$1.00=

=Wiring a House.= By HERBERT PRATT.

Shows a house already built; tells just how to start about
wiring it; where to begin; what wire to use; how to run it
according to Insurance Rules; in fact, just the information you
need. Directions apply equally to a shop. 4th Edition. Price =25
cents=

~FACTORY MANAGEMENT, ETC.~

=Modern Machine Shop Construction, Equipment and Management.= By O. E. PERRIGO, M.E.

The only work published that describes the modern machine shop
or manufacturing plant from the time the grass is growing on the
site intended for it until the finished product is shipped. By a
careful study of its thirty-two chapters the practical man may
economically build, efficiently equip, and successfully manage
the modern machine shop or manufacturing establishment. Just the
book needed by those contemplating the erection of modern shop
buildings, the rebuilding and reorganization of old ones, or the
introduction of modern shop methods, time and cost systems. It
is a book written and illustrated by a practical shop man for
practical shop men who are too busy to read _theories_ and want
_facts_. It is the most complete all-around book of its kind
ever published. It is a practical book for practical men, from
the apprentice in the shop to the president in the office. It
minutely describes and illustrates the most simple and yet the
most efficient time and cost system yet devised. 2nd Revised and
Enlarged Edition, just issued. 384 pages, 219 illustrations.
Price =$5.00=

~FUEL~

=Combustion of Coal and the Prevention of Smoke.= By WM. M. BARR.

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Aviation Engines: Design—Construction—Operation and RepairChapter V: Industrial Application of Storage Batteries; (1)

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