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about every 35 minutes throughout the day.

The drinking water is distilled and sterilized by two distillers with a capacity of 15 gallons each per hour. This water is then forced through the pipes to the different floors.

There are also two 11-horse-power motors for two triplex pumps used to force the water through a set of spraying pipes, which purify the air before it enters the office.

In addition there is a large motor-generator set of 220 volts alternating current, which changes the power to 500 volts direct current, the latter being used for four 22-horse-power motors that oper..te the passenger elevators.

In case of fire there is a spraying system of 50 pounds' pressure that can be operated in ten seconds.

Personal Items

MR. F. R. PHILLIPS, of Newport, Ky., is now connected with the South Covington & Cincinnati Street Railway Company, as Master Mechanic.

STANLEY W. BOUGHTON, of Alma, Michigan, a graduate of the American School, has drawn an excellent map of the city in which he resides. He made a canvass of the town, laying out all the new additions, streets, etc.; and, with permission. to use the village records, he furnished an excellent map of Alma and Alma Heights. The map, of which we reproduce a section, is used by all the real estate agents of Alma, and has recently been adopted as the standard map of the town. by the Alma Council.

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S. W. BOUGHTON.

MR. HORACE A. SUTLIFFE, formerly of Tacoma, Washington, has accepted a position as Master Mechanic with Bully Hill Copper Mining & Smelting Company, Winthrop, Cal. Mr. Sutliffe is a student in the Mechanical-Electrical Engineering Course.

Everything Electrical

Dynamos and Motors

PERSONAL AND MISCELLANEOUS (Continued!

D. WILLIAM MACDONALD, formerly of Dunedin, New Zealand, but now of London, England, writes as follows regarding the practical benefits he has received from his course in Marine Engineering in the American School of Correspondence:

"Among other advantages derived from the School, I passed the Government examination in New Zealand for First-Class Engine-Driver's certificate of competency, with which I was able to take charge of a steam plant in a flour mill running night shifts. The plant consisted of 2 boilers and I engine (110 H. P.), and the necessary pumps, feed-water heater, dynamo, etc.

"Since arriving in London, I had a discussion with an engineer about injectors. He was in doubt about the true working of an injector. I was enabled, by means of the description in 'Boiler Accessories,' to give him the best explanation he ever saw, according to what he said. I wrote it out for him.

"I could mention numerous cases where I and other A. S. C. students have scored points."

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Recently Graduated

THE FOLLOWING STUDENTS have been graduated from the American School of Correspondence since the last number of THE TECHNICAL WORLD was issued:

Bannan, L., Weatherly, Pa.-Course: Mechanical.

Bickford, Oramel S., Greenfield, Mass.Course: Mechanical-Electrical.

Clark, Leroy W., Providence, R. I.-Course: Stationary.

Cooper, Harry W., St. Louis, Mo.-Course: Mechanical-Electrical.

Cox, Wm. H., Rome, N. Y.-Course: Stationary.

Drew, Ernest L., Ashmont, Mass.-Course: Stationary.

Ermling, E. H., Delaqua, Col.-Course: Stationary.

Gould, Clifford, Chicago, Ill.-Course: Mechanical-Electrical.

Hendricks, W. W., Bardolph, Ill.-Course: Mechanical.

Howland, Cary E., Bloomingburg, O.Course: Stationary.

Hughes, David, San Francisco, Cal.Course: Stationary.

Kuenhold, Otto J., Cleveland, O.-Course: Mechanical.

Mackay, Chas. W., Brighton, O.-Course: Mechanical-Electrical.

Palmer, Ray A., New Bern, N. C.-Course: Mechanical-Electrical.

Mention The Technical World.

Learn the boss's job

I'

F YOU expect to rise to the position of foreman or superintendent you must learn to think about those things he must think of. It is not enough that you know how to do your own work well. You must know something about the work of the man above you, or you will never get up to his place. THE ENGINEERING MAGAZINE is made especially for the manager, superintendent and foreman. The articles in it deal with the actual problems which every works manager and shop superintendent has to grapple with in his own business problems of equipment, of operation, of policy. And they deal particularly with the newer problems springing from the new advances in machinery and in system, in which it is of vital importance to know the methods and experience of other successful manufacturers.

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They represent achievement, not merely opinion. They embody the work of the men who are doing things, not merely the thoughts of men who are writing about things. Theory is an excellent basis for progress, but it becomes enormously more valuable when it has been proved by trial. These articles tell what is actually being done and how to do it.

They are written by practical men who understand the need of precise and accurate statement. They are prepared as their authors would prepare an engineering project-without waste of words upon matters in which practice is settled, but with such full and explicit representation and details of that which is new and essential that the reader can build from the data given. They are "working drawings and specifications."

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Special Offer

We once issued a Special Number dealing especially with the organiza

Offer tion, management and equipment

of machine shops. It makes a

book of 638 pages, 209
illustrations and nearly

twenty thousand copies have been sold at 50 cents each. This coupon entitles you to a copy of this special Works Management Number, and a regular num

140-142 Nassau St., New York.

CUT OFF ALONG THIS LINE,

THE ENGINEERING MAGAZINE,

I for which please send me, prepaid, a copy of

your Special Works Management Number and a regular issue

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enclose 10 RING MV

Name....

Address.

ber of the Magazine at a cost of sending them

to you-10 cents.

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GAS ENGINE CASTINGS

in the rough or partly fin-
ished, for the half
horse power

Franklin
Gas Engine

Castings, Materials and Blue Prints, complete, $16.50.
Horizontal and Upright Types. Send for

Circular 7.

World's Largest Searchlight

THE GREAT SEARCHLIGHT at Nuremberg, heretofore regarded as the largest in the world, is quite eclipsed by one that has recently been placed on the Woman's Magazine building, St. Louis, Mo. The Nuremberg light, which was described in the last number of THE TECHNICAL WORLD, is of 316,000,000 candle-power. The St. Louis light is of 600,000,000 candle-power. On the night of its installation its reflection was seen at Kansas City, 300 miles away. This Electric Novelties and Supplies searchlight is thus by far the largest in

PARSELL & WEED

129-131 West 31st St.

NEW YORK CITY

The World's Headquarters for

If It's Electric We Have It. We Undersell All.

Fan Motor and Battery $2 to $10.00

existence, and was constructed at a cost of $12,000.

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Battery Table Lamp..

3.00

Battery Hanging Lamp..

10.00

Telephone, complete........2.50, 5.95

Electric Door Bells.......

1.00

Electric Carriage Lamps

5.00

Electric Lanterns...

.2.00, 3.00

$8.00 Medical Batteries..

3.95

$12.00 Belt, with Suspensory

Telegraph Outfits..

2.50
2.00

Battery Motors..

75c to 12.00

Bicycle Electric Lights..

Electric Railway..

3.50
3.25

Pocket Flash Lights.......1.00 to 2.50
Necktie Lights....

1.00

OHIO ELECTRIC WORKS, Cleveland, 0.

Agents Wanted. Send for Free Book.

A CONVENIENT WAY to carry

your brass trunk check when you are starting on a trip, is to slip it on to your key ring-safe, and it obviates a frantic search through thirteen different pockets when you want the check.

Mention The Technical World.

A

T

SCHOOL

WITHIN

ITSELF

HERE are XIX chapters of subjects, carrying you from the fundamental principles of electricity on through the various branches to a point where the careful student comprehends the complete designing, care and operation of a dynamo or motor. Each subject is carefully written and to the point. After a student studies a subject, he is questioned on that subject in such a manner as to bring clearly to his mind the points he needs to know regarding same. A DICTIONARY in back of book will enable him to learn the meaning of any electrical word, term or phrase used in this book, as well as hundreds of others in common use. All required tables necessary in the study are in it.

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$2.00 per Copy-Third Edition-11,000 Copies Sold The offer we make of refunding money if book is

not satisfactory upon examination is AN UNUSUAL ONE in connection with the sale of a book. But we have no fear of its return. Your decision will be what thousands of others have been. Money would not buy it if it could not be duplicated. We could print testimonials by the hundreds. It is best to order and be your own judge of its merits.

CLEVELAND ARMATURE WORKS, Cleveland, Ohio.

AMERICA'S GREATEST REPAIR WORKS. Armatures and Fields Wound-Commutators Filled.

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