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Features

Great Railroad Speed

Eayrs' Patent Stone Dressing Machine

Breaking of Railroad Car Axles

New Locomotives

A Great Locomotive Feat

Vapor Baths Applied to Cattle

Our Silver Currency

Explosion of a Mountain

Improved Preparation of Butter

Electric Clock

Another Claimant for the Steamboat

The Cow Tree

A Good Act

Interesting Statistics of the New York Post Office

Foundation, Natural and Artificial

Increase of the use of Opium

Gooseberry Bushes

Beet Sugar in Utah

Sub-Marine Wire

Prohibiting the Sale of Goods by Sample

Improved Bricks

Foreign Patents

Preserving Hams

The Crystal Palace in New York

Observations upon Planting, Cultivating, Digging, and Cellering Potatoes

The Steamer Glencoe

The Dual Phenomenon

How to Get Sleep

Improved Grain Separator

Patent Circle Plate for Doors

Improvements in Locomotives

Barker's Double-Acting Forcing and Lifting

Improvement in Boxes for Mill Dams and Breakwaters

Chinese Antiquities in Ireland

Paying for Parker's Water's Wheel

International Copyright

Some Reasons Why Patents should not be Extended

Discussion about our Patent Laws

Law Questions on Patents, Parker's Wheel, &c

Patent Case

The Woodworth Patent in the Senate

Another Fire Annihilator Experiment

Hindoo Letters

Bill for Reforming the Patent Laws

Recent Foreign Inventions

Petition for Extension of a Patent

List of Patent Claims

Another Dreadful Explosion

Inventors and their Models

Literary Papers

To Correspondents

Patent Laws, and Guide to Inventors

City Subscribers

Back Numbers and Volumes

An Important Paragraph

On Boilers.--No. 21

Another Small Planet

Agricultural Science

Advice to Writers for the Press

Ten Hour System

Looking-Glasses for Birds

Inventors

Departments

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    May 01, 1852

    Complex Causes. Alternative Solutions.