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The Road to Success

The Mechanical Theory of Forgetfulness

The Patent Middlings Purifier Case.--Another Important Decision by the Supreme Court


The Trouve Multiple Telephone

To Our Subscribers

Notes of Patent Decisions

The New York Elevated Railway

Mineral Wool


Buildings of the Paris Exposition of 1878

Stolp's Complete Gear Instrument

Mery's Weighing Scoop

Curious Blood Disks

By John Michels

Steam Syphon Pumps

The Scientific American

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