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Features

Improved and Simplified Band Saw, Plan for Converting Reciprocating into Rotary Motion, and more

Expansion and Contraction of Steel

The Copper Region of Lake Superior

Clemson's Adjustable Spring-Held Saw Teeth

The Chemistry of Meteorites

Coating Iron with Copper

Editorial Summary

House's Improvement in Trunks

Manufacturing, Mining, and Railroad Items

The November Meteors

Recent American and Foreign Patents

Answers to Correspondents

New Publications

Extension Notices

Hoffmann's Improvement in Lamps

Anti-Friction Metal for Railway Axles

The Petroleum Fuel--Will it Supersede Coal?

Economy in Coke Making--The Utilization of the Waste Gases

Hand-Tooling--Its Advantages to the Machinist

Official Report of Patents and Claims

Pending Applications for Reissues

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November 30, 1867

See the World from a Different Perspective

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