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In the same
Boat

Two Men

Both Fishing and Both Satisfied

Mr. Business Man Reader is fishing for opportunities for ad-
vancement in business, through up-to-date knowledge and compre-
hension of new things and new methods. Mr. Wise Advertiser is
fishing for opportunities to enlarge his business, increase his sales
and increase his profits. Results please them-results satisfy them
-and they continue to fish.

There are more boats at the wharf, plenty of "good catches" in
the sea.
If you are like Mr. Business Man Reader, desiring to
keep in touch with the latest advancement in Commerce, Industry,
Science, Invention and Discovery for self-advancement and pleas-
ure, follow his example-read the Technical World Magazine
during the coming year. It will fill a long felt need. It will enable
you to feel the pulse of the world.

If you are like Mr. Wise Advertiser and desire to enlarge your
business, increase your sales and increase your profits, follow his
example-employ the greatest business propelling power on earth
-profitable advertising in the

Technical World Magazine

58th & Drexel Blvd.
CHICAGO

If the Technical World Magazine is mentioned we guarantee the reliability of our advertisers.

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WE WANT TO GIVE YOU THIS
$1.00 LIGHTNING CALCULATOR

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FREE

The greatest labor-saving work on figures ever published.
ABSOLUTELY INVALUABLE to merchants, mechanics, manufacturers.
bankers, machinists, clerks or anyone who handles figures. No matter what
the example is, it shows the whole answer at a glance. No limit to how large
or small the figures, or what the fraction. Every conceivable problem fully
worked out and answer given at once.

THE GREATEST BOOK of its kind the world has ever known. The an-
swer to any question is as easily found as a word in a pocket dictionary.
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.

WE GIVE IT TO YOU FREE ON THESE TERMS:

We want to increase the Subscription List to our Monthly Journal,

MODERN MACHINERY. To keep abreast of mechanical progress should be the aim of every

The foundation of civilization rests on inventions of new machinery.

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.

MODERN MACHINERY, One Year, . $1.00
·
ROPPS NEW CALCULATOR,

· · 1.00

}$2.00

Send us your subscription at once, enclosing 81.00 with this ad., 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, Room 510 Security Bldg., CHICAGO, ILL.

If the Technical World Magazine is mentioned we guarantee the reliability of our advertisers.

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If the Technical World Magazine is mentioned we guarantee the reliability of our advertisers.

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If the Technical World Magazine is mentioned we guarantee the reliability of our advertisers.

One of our 15 months old trees

$1,500 a Year For Life

Any one who can spare $2.50 or more a month can purchase an undivided interest in our 15,000-acre rubber plantation in Tropical Mexico. $25 a month paid through the development period of our plantation, should bring you an average revenue of $1,500 a year net profit as long as you live and leave an annuity for your heirs. If you wish to save for old age or provide for the days when you feel entitled to retire from constant work, this is a most excellent opportunity. It is more profitable than life insurance, and not so long to wait-safe as city real estate, yet not so costly; better than a savings bank for the profit is greater.

All wealth comes from the earth and our 15,000 acres, well watered, accessible to markets, and superintended by an experienced and capable American manager, should yield large and steady profits.

We are changing the production of crude rubber from the primitive and destructive methods heretofore employed by the natives to the most scientific and successful plan known to modern forestry.

There is nothing speculative about crude rubber. It can be sold every day in the year in any market in the world at a price that has been steadily increasing for years. For a quarter of a century the world's supply has been spoken for, months before it reached the civilized market. The price has doubled in a decade and the question of future supply is of vast moment and can only be solved by the scientific cultivation of the rubber tree.

We are engaged in this immensely profitable industry on a large scale, having nearly one million rubber trees under cultivation which will be producing rubber in due time.

The unusual opportunity is now open to you to secure shares in our plantation. Each share represents an undivided interest in our land upon which we expect to soon have growing, at least 1,500,000 rubber trees and 500,000 cocoanut trees, besides other tropical products. The great work we have accomplished absolutely assures the success of our enterprise.

We have full and complete literature showing conclusive facts, logical figures and definite references of good character, proving beyond any doubt that our proposition is bona fide, certain and profitable.

It is worth your time to ask for our booklets. In justice to yourself you should provide against the ravages of time, the chances of poverty and the misfortunes of ill heath, by making an investment and securing a competent income that will cover all necessary living requirements. Write for booklet-"Money Making Opportunities of Mexico," and satisfy yourself that our statements are correct. Over 900 people, after thoroughly investigating our proposition, have become associated with us in this great enterprise. Write today for facts which will put you in close touch with every detail of our plan. Our literature is sent free, and every request will receive immediate attention.

CONSERVATIVE RUBBER PRODUCTION CO.

614 Monadnock Building

SAN FRANCISCO, CAL.

FREE!

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Every Factory Should
Have This Book

Friction gearing is rapidly
displacing many forms of
"toothed gearing in the
modern factory. New problems
have arisen. This book solves
them.

We are the largest manufactur-
ers of
PAPER & IRON FRICTIONS
AND PAPER PULLEYS

The Rockwood kind of paper equipment is
by far the best and most satisfactory. It will
increase the efficiency of your machinery,
and save you money from the very first.

The Rockwood book is a valuable treatise
on the whole subject. Tables, facts and
formulas. Copyrighted. Sent free to those
who need it. State occupation, and firm
connected with.

The Rockwood Mfg. Co.
1903 English Ave.
Indianapolis, Ind., U. S. A.

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With

these plans, drawn
by able architects

-and our illustra

tions, descriptions, cost esti-
mates at current prices, and

free information service, your building cannot go wrong.

KEITH'S MAGAZINE

The Recognized Authority for Home Builders, Deals in Facts. One year's subscription $1.50, with illustrated Book of 42 Cottages and Bungalows FREE. Keith's at news-stands, 15c. 74 designs costing $3,000 to $5.000 and Keith's one year, $2.00 $5.000 and up 2.00 1.75 Max L. Keith, Lumber Exch., 498 Minneapolis, Minn.

72

120 beautiful interiors

If the Technical World Magazine is mentioned we guarantee the reliability of our advertisers.

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