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Features

Improvement in Steam Hammers, Securing a Permanent Way, and more

Beet Root Sugar

Free Trade and Protection

Haskell's Portable Bookcase

A New Process for Determining the Comparative Value of White Lead

By C. F. Chandler

Pallissard's Walking Support for Infants

Practical Suggestions on Tanning Leather

By C. Gilpin

Editorial Summary

Improved Hinge and Door Stay

Improvement in Three-Wheeled Velocipedes

Centenary of the Steam Engine—James Watt

Vis Inertia

Employers and Employed

Habits of Mechanics

The Recent Auroral Display

The Relative Merits of New Iron and of Scrap Iron as Materials for the Shafts of Ocean Steamers

Applications for the Extension of Patents

Answers to Correspondents

New Publications

Recent American and Foreign Patents

Official List of Patents

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