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Features

The Capacity of the Subway

Battle Test of a 12-Inch Turret

Rectangular Latticed Compression Members in Bridges

The Current Supplement

Permanent Printed Records on Linen

By William J. Manning

Aeronautical Notes

The Award of the Scientific American Medal

The Largest Reflecting Telescope in the World

By Grace Agnes Thompson

Panama Canal: Final Plan and Present Condition of the Work

The Mechanics of Autos that Pass in the Air

Knudsen's Process of Transmitting Pictures by Wireless Telegraphy

By the English Correspondent of the Scientific American

The Insect Enemies of Books

By Jacques Boyer

A New Sun Dial

By the Paris Correspondent of the Scientific American

Tongs with Adjustable Jaws

Power Transmission Mechanism

An Improved Saw Handle

Rack for Coats, Wraps, and Other Garments

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June 06, 1908

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