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Genesis of the First Successful Aeroplane

The Seventh Annual Show of the Automobile Club of America

The Current Supplement

The Patent Office in 1906

Righting a Capsized Lighthouse Caisson

By Stuart Stevens Scott

Automatic Apparatus for Selling Postage Stamps, Post Cards, and Newspapers

By Robert Grimshaw

Total Eclipse of the Sun in January, 1907

By Mary Proctor

The Second Annual Exhibition of the Aero Club of America

The Motive Power of a 25 Knots Liner

The Poulsen Selective System of Wireless Telegraphy

By A. Frederick Collins

A Disease Which Threatens the American Chestnut Tree

By G. G. Copp

Patent Department

A Collapsible Ash-Pan

An Improved Hand Camera

Gage for Marking Window Casements

Business and Personal Wants

READ THIS COLUMN CAREFULLY--You will find inquiries for certain classes of articles numbered in consecutive order. If you manufacture these goods write us once and we will send you the name address of the party desiring the information. In every case it is necessary to give the number of the inquiry

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December 15, 1906

See the World from a Different Perspective

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