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Features

Improvement in Machines for Planting Cotton, Railroad Safety Switch, and more

Railway Bridges--Their Material and Mode of Construction

Science Familiarly Illustrated

Reffelt's Educational Apparatus

Asbestos, A Material for Glass Making

Answers to Correspondents

Recent American and Foreign Patents

Webster's Damper Drum for Stovepipes

Bowell's Patent Double-Teeth Gear, for Clothes Wringers, Rolling Mills, and Planers

Mechanical Engineering in the United States

The Bergen Nitro-Glycerin Explosion

The Exposition's Exit

Utilization of Coal Dust and Culm

Burning of a Mail Car.--Destruction of Several Thousand Copies of the Scientific American

Patents and Claims

Extension Notices

Pending Applications for Reissues

Important Patent Case

Manufacturing, Mining, and Railroad Items

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Gene Therapy Comes of Age?

Gene Therapy Comes of Age?

Explore the latest advances