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CONSULTING DEPARTMENT--(Concluded)

White Metal Alloys Question: Please give me the composition of the metal used for lining the cross-head slides, rod-brasses, etc.-J. E. B.

Answers: An alloy composed of the following is commonly used for lining the cross-head slides:

Lead, 65 parts; antimony, 25 parts; copper, 10 parts. The above is also used for rodbrasses and axle bearings. Some object to white metal containing lead or zinc. It has been found, however, that lead and zinc have properties of great use in these alloys.

In the German Navy, the following alloy is used:

Tin, 85 parts; antimony, 7/2 parts; copper, 77/2 parts.

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Oil Filters Question: With sponges, hay, and burlap screens placed in filter, the cylinder oil still deposits on the crowns of boilers. Kindly publish in The TECHNICAL WORLD, a remedy for same.-W. C. E.

Answer: With the somewhat limited information which you have given, it is hardly possible to give a remedy for the trouble you mention. We do not know whether you are using a standard filter of some manufacturer, or whether it is a built-up filter of your own make. In any case, the only suggestion we could offer at the present is that you should renew the hay, burlap, and other substances used, whenever they become saturated with the oil. We think that in the present instance, your trouble may be due to using saturated screens.

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Removing Glaze from Emery Wheels

Question: Will you please tell me how the glazing on emery wheels can be prevented ?H. E. P.

Answer: If the wheel is not altogether too hard, it can sometimes be remedied by reducing the face of the wheel to about 18 inch, or by reducing the speed, or by both. Emery wheels should be

turned off so that they will run true beHAVE YOU WORN THEM? Not "celluloid" - not "paper collars," but made of

fore using. A wheel that glazes imfine cloth, exactly resemble fashionable liner goods,

mediately after it has been turned off, and cost of dealers, for box of ten, 25c. (27 cts. each). NO WASHING OR IRONING can sometimes be corrected by loosening When soiled, discard. By mail, 10 collars or 5

the nut, and allowing the wheel to aspairs of cuffs, for 30c. Sample collar or pair of cuffs for 6e. in U.S.stamps. Give size and style.

sume a slightly different position, when REVERSIBLE COLLAR CO., Dept. W., BOSTON, MASS.

it is again tightened. Mention The Technical World.

“THE BEST" OF EVERYTHING IN LOOSE LEAF

The Reliable

is a file of the prong type, having many improvements over any file of this class heretofore made.

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No metal hinges to mar its beauty nor wear through the bindings to scratch the desk.

An entirely new latch that is simple and reliable.

Improved construction of the prongs that gives the file the greatest strength and rigidity.

Its neatness and workmanship has never been equaled.
Ask your stationer to show you

The S. & T. Reliable File

If not convenient to a dealer write us for catalogue.

We make quick deliveries.

SIEBER & TRUSSELL MFG. CO.

ST. LOUIS AND NEW YORK

Mention The Technical World.

Do Your Best

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Some Pertinent Observations Regarding the Wage-Earner's Oppor

tunities of Betterment

The Frederick Post Co.

THE words of the above title ap

ply, of course, equally to employer and employee. For, in the

last analysis, the vexed question of capital and labor resolves itself into one of mutual right as between man and man; and nothing can be regarded as perfectly right, either in performance or its compensation, which falls short of the

best possible under existing conditions. DOST'S

The labor problem is a moral problem,

and for that reason can no more be finally EXTRA

solved by convention or by legislation Waterprool

than can the world-old problem of the uprooting of evil. Each individualemployer and employee—holds the key in his own heart. The employee must set himself right, in the broadest sense of that term, before he can claim a right to advancement at the hands of those who are right; and the employer, likewise, cannot avoid doing the right without eliminating his own right to employ those who are right.

In this connection, the following ediMakers

torial, reproduced by permission of

Hearst's Chicago Evening American, 28 Reade Street

216 So. Clark St.

contains much food for thought: New York

. Chicago

Don't Do Just Enough to Earn Your PAY

You will never get more unless you are worth it. POGKET ELECTRIC

AMONG the young men wlio are fond GENT

of making sarcastic references to Fate FLASH LIGHT UVIMA

because they have not been more successful, this expression is very common:

“I'm earning all the money I'm getting. I don't intend to do any more work

than I'm paid for." The World's Headquarters for

This rule a great many men follow Electric Novelties and Supplies very carefully. They estimate what they If It's Electric We Have It. We Undersell All. think they ought to do to earn their salXmas Tree Lamps and Battery .....$ 3.00

aries, and they do that and no more. They feel that they are absolutely just to their employers because they are conscientious in their effort to earn exactly what is paid for.

This logic may be sound, although usually a man's estimate of what his work

is worth is not very accurate; but it is OHIO ELECTRIC WORKS. Cleveland, O. about as dangerous a mental attitude as Agents Wanted. Send for New Catalogue Just Out.

a wage-earner well can take. Mention The Technical World.

Postage extra, ric. The best
made; lasts the longest; gives most
powerful light. It's always ready-simply press the but-
ton. Extra batteries 250 each. Agents make big money.
Send for catalogue. THE VIM CO., 68 E. Lake St., Chicago.

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Battery Table Lam) ......

3.00 Battery Hanging Laup...... 10.00 Telephone, complete.........

5.95 Electric Door Bells......

1.00 Electric Carriage Lamps..

5 00 Electric Lanterns............

3.00 88.00 Medical Batteries.......

3.95 $12.00 Belt, with Suspensory.

2.50 Telegraph Outfits.....

2.00 Battery Motors ........... 750 to 12.00 Battery Fan Motor ...

6.50
Bicycle Electric Lights

3.50
Electric Railway .,......
Pocket Flash Lights ....... 1.00 to 2.50
Necktie Lights....... 90c, 1.00 and 1.2

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We want to give you this
Lightning Calculator T

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The Greatest Labor-Saving Work on

Figures Ever Published.

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BSOLUTELY INVALUABLE to merchants, mechanics, manufacturers, bankers, machinists, clerks or anyone who handles figures. THE GREATEST BOOK of its kind the world has ever known. The answer to any question is as easily found as a word in a pocket dic

tionary. This book required 35 years' work to complete it. No matter who you are or what your business, this book prevents mistakes, relieves the mind, saves labor, time and money, makes you independent, sure and self-reliant in figures.

Ropp's NEW CALCULATOR is the Final consummation of devising and improving system after system; of spending thousands of dollars in experimenting and in making millions of miscellaneous calculations.

It is a CALCULATOR that positively CALCULATES with lightning speed, not merely a limited number of EASY examples, but almost every conceivable example or problem that may occur on

the farm, in the Store, Shop. Bank, Office or Countingroom. Furthermore, it clearly teaches all the LATEST, SHORTEST and EASIEST Methods known. If you prefer to do your own calculating with ease, speed and accuracy, you should have this wonderful book. It will teach you more about lightning Calculation, and in a shorter time than all the so-called “Lightning Calculators' combined.

The ROPP SYSTEM is a universal system of Tables, showing at a glance the cost of articles sold by the Bushel, Pound, Hundred, Thousand, Ton, Dozen, Yard or Gallon.

The PERCENTAGE TABLES are constructed on the QUADRUPLEX system, and are far more comprehensive and convenient than any system ever published before,

They show the INTEREST on any sum, from 250 to $10,000, for years, months and days, at regular rates, WITHOUT TURNING PAGES; both on the 360 and 365 day basis (page 143).

They show the NET PROCEEDS of any bill, discounted at over 200 different rates-from 1-16 of 1%, to 90 and 40% off. This new feature will greatly assist Dealers and Jobbers who buy and sell at various discounts, in fixing the prices and profits on goods.

They show the PRESENT Worth of any debt for 1 year, and the COMPOUND INTEREST, to 40 years, at regular rates; also the Amount and Present Worth of ANNUITIES, to 20 years,

THE TABLES OF MENSURATION (pages 84 to 89), are all absolutely correct and reliable and embrace all PRACTICAL DIMENSIONS. They show at a glance, the contents in SQUARE and CUBIC FEET of Logs, Lumber, Timber, Cord-wood, etc.: the contents in BUSHELS and GALLONS, of Corncribs, Bins, Wagonbeds, Cisterns, Tanks, Wells, etc.

The WAGES TABLES (pages 80 to 83), show the exact WAGE when working by the MONTH of 26 or 30 working
days, from $5 to $150 per month ; by the WEEK, from $2 to $25; and by the Day from $1 to $5, either by the 8, 9
or 10 hour system.
Thousands of Tables of valuable calculations fill the book-too numerous to mention here.

We give you this Lightning Calculator Free on these terms.
We want to increase the Subscription List to our Monthly Journal.

The foundation of civilization rests on inventions of new machinery.

• To keep abreast of mechanical progress should be the aim of every intelligent man. Our publication keeps you informed, and it is written so all can understand it, and the best illustrated of its class. MODERN MACHINERY costs you $1.00 a year. We want to get you started reading this paper regularly, and therefore make you this offer.

Send us your subscription at once, enclosing $1.00, and we will mail you Modern Machinery every month for one year and the Calculator FREE at once. If not just as represented, send the book right back and we will refund your money. Don't delay accepting this proposition ; write to-day.

Remember, money back to-morrow if dissatisfied.
MODERN MACHINERY PUB. CO.,

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Send us your the Calculatordelay accepting

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Security Bldg., Chicago, Ill.

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. CUT OFF HERE AND MAIL AT ONCE .....

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MODERN MACHINERY PUBLISHING Co.,

Date.
SECURITY BUILDING, CHICAGO.
Gentlemen :-Enclosed find $1.00, for which please send me Modern Machinery for one year, and also send
me, free of all charges, Ropp's New Calculator as advertised in Technical World.

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DO YOUR BEST-(Continued)

LETTERS and LETTERING

measures 5%x844 inches, contains 234
pages, and is substantially bound in

If a man is not worth more than he is getting, it stands to reason that he will never get more. As long as he is earning his present salary, his employers have no object in paying him one which he

doesn't earn. When a man who owns N illustrated Treatise by FRANK a business raises a salary, he does it beCHOUTEAU Brown, containing 210

cause he finds it profitable to himself to examples. A complete and I varied collection of Alphabets of

do so. There is very little sentiment conStandard and Modern Forms, so cerned in the transaction. The employer arranged as to be most practically and doesn't pay a lazy man any more money in conveniently useful to ALL who have to

the hope to make him industrious. That draw letter-forms.

hope would never be realized. He does Every Draughtsman

not advance the salary of a man in the

expectation that the man will be worth should at least know just what this book

more to the concern. The employer is. Our illustrated folder gives full inform

knows that an expectation of that kind ation and a postal card is all it costs.

would be idiotic. When salaries are “ LETTERS AND LETTERING"

raised, they are raised to meet the grow

ing value of men who are earning more cloth. Price, postpaid, : . $2.00

than they get.

The business man knows that to keep BATES & GUILD CO. good men working for him he must pay

them according to what they do, not what 42 CHAUNCY ST., BOSTON, MASS.

they would do if they got more money.

In all kinds of business where men are employed, there is a large class of clerks and other wage-earners who work only for pay-day. They are continually haunted by the fear that they will do more than their neighbor who is paid

the same, or that they will wear out their for the Student and Draftsman

brains in order to make another man's fortune. They will always continue to

work for pay-day, and their envelopes Architecture-Orders. The Orders and their Æsthetic Prin at the end of each week will always conArchitecture-Styles. The History and Description of the tain the same amount of money—or less;

for when a man lacks interest in what he Architecture,Design. The Principles of Design in Archi

is doing, he soon begins to fall off in his earning power.

Meanwhile the men who keep interested, who are not afraid of doing more work than they are paid for, and who are not so much worried about wearing out their brains as they are about using them too little, are the men whose wages are advanced. Employers learn that such men steadily earn more than they are

paid; and while their salaries may never Send for complete Catalogue No. 62 just issued

keep pace with their value—there would

be no profit in employing them if such Wm.T.Comstock, Publisher was the case—they at least are progress23 Warren Street, New York

ing, and soon will leave their pessimistic young friends far behind.

Another thing which the man who goes Mention The Technical World.

Practical Aid

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

ciples. By W. H. LEEDS. Illustrated. 60 Cents.

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.

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

Acousties in Relation to Architecture and Building. The Laws of Sound ay applied to the Arrangement of Buildings. By Professor T. ROGER SMITH, F. R. I. B. A. New Edition, Ro. vised. 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. $1.60.

Draughtsman's Manual: or Ilow 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 lessong beginning with elementary principles and carrying the student through a thorough course in perspective. Thirtythree illustrations. One 12mo volume, cloth. $1.00.

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