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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, 77/2 parts; copper, 77/2 parts.


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.-IV. 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 16 inch, or by reducing the speed, or by both. Emery wheels should be turned off so that they will run true before using. A wheel that glazes immediately after it has been turned off, can sometimes be corrected by loosening

nut, and allowing the wheel to assume a slightly different position, when it is again tightened.

Mention The Technical World.


“THE BEST" OF EVERYTHING IN LOOSE LEAF is a file of the prong type, having many improvements over any file of this class heretofore made.


The Reliable


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.



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Do Your Best Some Pertinent Observations Regarding the Wage-Earner's Oppor

tunities of Betterment




HE 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. The labor problem is a moral problem,

and for that reason can no more be finally EXTRA

solved by convention or by legislation than can the world-old problem of the uprooting of evil. Each individual employer 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 with

out eliminating his own right to employ The Frederick Post Co.

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


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 who are fond of making sarcastic references to Fate because they have not been more success

ful, this expression is very common: Postage extra, ric. The best

"I'm earning all the money I'm getpowerful light. It's always ready-simply press the but.

ting. I don't intend to do any more work Send for catalogue. THE VIM CO., 68 E. Lake St., Chicago.

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 sal

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

3:28 usually a man's estimate of what his work Necktie Lights..

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.

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made; lasts the longest; gives most
ton. Extra batteries 250 each. Agents make big money.


Xmas Tree Lamps and Battery .8 3.00
Battery Table Lum

Battery Hanging Laup.

10.00 Telephone, complete..

2.50, 6.95 Electric Door Bells..

1.00 Electric Carriage Lamps

5 00 Electric Lanterns...

2.00, 3.00 88.00 Medical Batteries..

3.95 812.00 Belt, with Suspensory

2.50 Telegraph Outfits.

2.00 Battery Motors

750 to 12.00
Battery Fan Motor.

Bicycle Electric Lights
Electric Railway
Pocket Flash Lights.. 1.00 to 2.50

.30c, 1.00 and 1.2


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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, Bing, 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. MODERN MACHINERY. 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., Security Bldg., Chicago, Ill.



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)

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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 a business raises a salary, he does it because he finds it profitable to himself to do so. There is very little sentiment concerned in the transaction. The employer doesn't pay a lazy man any more money in the hope to make him industrious. That hope would never be realized. He does not advance the salary of a man in the expectation that the man will be worth more to the concern. The employer knows that an expectation of that kind would be idiotic. When salaries are raised, they are raised to meet the growing value of men who are earning more than they get.

The business man knows that to keep good men working for him he must pay them according to what they do, not what 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 brains in order to make another man's fortune. They will always continue to work for pay-day, and their envelopes at the end of each week will always contain the same amount of money-or less ; for when a man lacks interest in what he 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 keep pace with their value-there would be no profit in employing them if such was the case—they at least are progressing, and soon will leave their pessimistic young friends far behind.

Another thing which the man who goes

Practical Aid

for the Student and Draftsman

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

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

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

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

Acousties in Relation to Architecture and Building. The Laws of Sound as applied to the Arrangement of Buildings. By Professor T. ROGER SMITH, F. R. I. B. A. New Edition, Re. 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. $1.50.

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.

Send for complete Catalogue No. 62 just issued

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

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