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THE LAST CHANCE

End of Our Sweeping Clearance Sale of Slightly Rubbed Sets of
THE NEW AMERICANIZED

ENCYCLOPEDIA BRITANNICA

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Half Morocco Sets All Gone. Less Than 100 Cloth Bound Sets Left.

A

S we predicted in our last month's offer, our half morocco sets were snapped up instantly by those who know WHEN TO BUY. The overwhelming response swept them away with a rush, and all that we have left marked by slight imperfections are a few sets in cloth binding. These we had intended to sell in local trade but the keen disappointment expressed by many who were too late last month leads us to offer them to our wider public all over the country. There will be no favoritism--first come will be first served until the sets are gone.

The imperfections are so slight as to defy detection if we choose to send them to you as brand new sets. Here and there a volume has been handled by a customer or exposed in the store-window-that is all. Trivial as they are, however, these defects make it impossible to sell them as absolutely perfect, and we offer these few sets, therefore, at JUST THE COST OF UNBOUND SHEETS. It is the most remarkable book offering of the twentieth century. THIS WORLD-FAMOUS WORK is the product of three hundred of the finest brains in America. With the original Britannica as a foundation, they have added, condensed and improved until this colossal work constitutes the most authoritative, comprehensive and up-to-date encyclopedia in the world. It is a huge library in itself. Other books tell about one thing-this tells about everything. It covers the entire range of human knowledge, discovery, belief and experience. It is the sum of human endeavor, the essence of the World's libraries and literatures, the one indispensable possession in every household of intelligence and ambition. Can YOU afford to do without it?

T.W.

7-07

SIEGEL COOPER CO. New York

Send me on approval, prepaid, a complete set of the New Americanized Encyclopedia Britannica in cloth binding at the special price of $31.00. If the set is satisfactory I agree to pay thereon $1.00 as Club fee within 5 days after the receipt of goods, and $2.00 each month thereafter for 15 months. Title to remain in Siegel Cooper Company till the full purchase price has been paid.

$1.00 SECURES POSSESSION OF THE ENTIRE SET Nothing is required in advance. You send
for the books-you get them-you ex-
amine them. Then, when you are convinced that they are the greatest book bargain of
recent years, YOU FORWARD $1.00 to open your contract, and $2.00 monthly thereafter
until you pay $31.00. The regular price of these handsome cloth bound sets is $60.00.-
NO CHARGE FOR EXAMINATION. But-if you use the attached coupon for
your application-not a cent is required until you have examined the books, and seen
for yourself the excellence of this offer. Mail the coupon at once. The New
Americanized Britannica is a phenomenal value, even at $60.00; and at this
sweeping reduction (for sets on which wear or discoloration is scarcely notice-
able) you are offered a bargain you will never again have a chance to secure.
NO OBLIGATION RESTS ON YOU. We pay all transportation charges. If you decide
not to purchase, return the books at our ex-
pense. If you like the books you will have immediate possession thereof. You can
pay just $1.00 and the balance a little each month.

SIEGEL COOPER CO.

Name

If the books are not satisfactory, I am to notify you, and hold them subject to your order.

J. B. GREENHUT, President

6th Ave., 18th to 19th Sts.

NEW YORK

Address

Mention Technical World Magazine

Timber Trestle Bridge

IN 'N the early days of railroad construction, and even now for temporary freight lines, a type of railway bridge shown in the accompanying cut is used. In the dense forests of this country, Canada, and Australia, this type of bridge is especially adapted to the work, owing to its great strength, and the cheapness of material and labor. Although such a trestle bridge gives the impression of being short-lived, it nevertheless lasts from twenty to fifty years, depending on the kind of wood used, the location, and other circumstances. The logs are seasoned by evaporating the sap by air-drying. Artificial drying is seldom used for this kind of work. In addition the timbers are generally impregnated with some liquid to protect them against certain wood-eating insects. Creosoting is prob

thus effective, the increased area of the surface that strikes the water sending him forward with the increasing speed that a boat driven by a paddle takes. The

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WEBBED GLOVE FOR SWIMMER.

TIMBER TRESTLE RAILROAD BRIDGE IN OREGON.

ably the best protection, and painting, tarring, and impregnation with metallic salts have also been used.

Webs for Swimmers A SWIMMING glove to aid man in his progress through the water, is a recent invention. It gives the swimmer the assistance the duck derives from his webbed feet. Greater speed and a greater distance covered, with less fatigue than with the naked hands, are claimed to be the advantages the wearer of this glove will enjoy. It fits the hands. tightly and is slipped on in the ordinary. way. The webs are strong pieces of cloth, running from little finger to thumb. Every stroke of the swimmer is

woes of the beginner in the aquatic sport are lessened; the pleasure of the expert is increased.

Origin of Coal and Iron AGES before man inhabited the earth,

we are told, huge arborescent ferns, and forests of reed-like plants grew in the valleys between sand-stone mountains and in the deltas produced by great torrents sweeping from the vast hills. These curious monster plants grew rapidly and perished as speedily as they came, giving place to more vigorous vegetation. As the plants would decay they would become matted into a peat-like mass of carbonaceous matter. This vegetable matter would eventually become buried under thick deposits of mud and sand by reason of heavy floods. Upon the bed thus formed another series of similar plants grew, decayed and formed by the same process in another vegetable bed, which would in time give away to still another, and then another.

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MENOMONIE,

Chicago Office:

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WISCONSIN

1229 Michigan Ave.

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Real Recreation

En route between

Detroit and Buffalo

The D. & B. Line steamers leave Detroit week days at 5:00 p. m., Sundays at 4 p. m. (central time) and from Buffalo daily at 5:30 p. m. (eastern time) reaching their destination the next morning. Direct connections with early morning trains. Superior service and lowest rates between eastern and western states. Rail Tickets Available on Steamers

All classes of tickets sold reading via Michigan Central, Wabash and Grand Trunk railways between Detroit and Buffalo in either direction will be accepted for transportation on D. & B. Line Steamers.

Send two cent stamp for illustrated pamphlet and
map of Great Lakes. Address,
L. G. Lewis. G. P. A., Detroit, Mich.

Detroit & Buffalo Steamboat Co.
Philip H. McMillan, Vice-Pres. A. A. Schantz, Gen. Mgr.

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Railways as Man
Killers

DURING the year ending June 30,

1905, there were killed by the railroads of the United States 9,703 persons, while 86,008 were injured. During the year 1905, in Great Britain, but 1,099 persons were killed, and 6,459 persons injured. Of the American killed, 537 were passengers, and of the British, 39 were passengers. All but one of these 39 deaths were due to four collisions and derailments. Three hundred and fortyone American passengers were killed in the same class of accidents.

A most astonishing comparison is that

of the number of passengers carried for each one killed and injured. In America, during the fiscal year 1905, one passenger was killed for every 1,375,856 carried, and one injured out of every 70,655. In Great Britain the average for thirty-one years was one passenger killed for every 34,464,892 carried, and one injured out of each 3,023,995. It would thus appear that it is about thirty times as dangerous to ride upon an American as a British train.

In spite of this enormous death-roll in America, however, a curious indifference is manifested by the public and by legislative bodies. In Great Britain there appears to be a determination on the part of both the law-making powers and the railways to make even smaller the already low percentage of accidents, and more stringent laws and regulations are every year being adopted and enforced.

One of the best reasons for the comparatively small number of accidents in Great Britain as compared with America, is the more solid construction of the British roadbeds, the tracks of the most unimportant branch lines, as well as the trunk lines, being well ballasted. There is also in Great Britain an almost uniform absence of grade crossings in cities, a thorough protection of highway crossings in the country, and a very general use of tunnels and bridges to reach the trains at railway stations.

The small number of British passengers killed in 1905, was the largest, however, since 1889, though the number injured was far below the average for many years past. Fewer passengers were killed and more injured in 1905 than usual by the movement of trains, as distinguished from train accidents. It is asserted that practically all of these casualties were due to the carelessness of the passengers themselves rather than to any negligence on the part of the railway employes.

A collision or derailment occurred in Great Britain only once for each 2,014,689 train miles run, a gain of 34 per cent over 1904. This improvement is said to be due to the use of continuous brakes, and the growing care and circumspection exercised by railway employes.

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Battery Fan Motor $1.00 CAPITOLBOILERS.

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Write for our Catalogue 22-T

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17 Park Place, New York

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$3000 TO $10.000.
A YEAR IN THE
REAL ESTATE
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"If you can whistle a tune, you can play it on the Dolceola." That's cheerful, isn't it? Well, that is the statement of a Dolceola enthusiast. Take a Dolceola on your vacation trip; it will double the interest and your pleasure. The Dolceola captivating harmony and original construction give it instant popularity, and the hearty endorsement of musical experts everywhere. The Dolceola, with its four full octaves, embodies the exquisite tone value of two guitars and two mandolins. Its action, while similar to that of the piano, is quicker and more simple, permitting effects impossible with the larger instrument. Any class of music can be played. Music lovers are delighted with it. You must have one. Our Handsomely Illustrated Booklet Free. Agents make big money.

The Toledo Symphony Co., 705 Snow Flake Building, Toledo, Ohio

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Our fuel Bills

RADIATORS

by discarding the old furnace, stoves or open grates and installing a CAPITOL Boiler and Radiators in your home. The CAPITOL Boiler is such an economical consumer of fuel that it will quickly pay for itself in the amount it clips off your fuel bills.

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The CAPITOL gives an even, steady heat that penetrates every nook and corner of the house-no cold corners or hallways. The rooms on the "wind side" of the house will keep just as warm, no

matter if it is howling zero outside.

CAPITOL BOILERS
AND RADIATORS

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Dept. B

United States Heater Co DETROIT, MICH.

Branch Offices and Agencies in All Principal Cities.

Mention Technical World Magazine

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