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Features

New Water Meter

Printing From Veneers

List of Patent Claims

Artificial Marble

Drying Sized Paper

Saw Gummers

Operating the Cutters of Reaping and Mowing Machines

Patent Extensions--Mismanagement in the Notices

Apparatus for Navigating the Air

Do Alkalies Injure the Teeth?

Willson's Sawing Machine

Fire-Place Shutters

Improved Reaper and Mower

Patent Sleigh--Collecting Agents

Birthday of the Scientific American

Contradictions and Curiosities in Science

A Profitable Enterprise

Our New Dress

The Commissioner of Patents and the Patent Office

Feats of Fire-Arms

Steam Cultivation in England

A Trap Vender and His Wares

Ludwig's Machine for Felling Trees

Correspondents

New Prospectus

Death of an Eminent Physician

The Inventor of the Safety Lamp

The Late Commissioner of Patents

Departments

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    September 12, 1857

    Confronting Common Wisdom