Features
Editorial Correspondence
Science Familiarly Illustrated
Turning a Movable Wheel Around a Fixed Wheel
Manufacturing Mining and Railroad Items
Recent American and Foreign Patents
Answers to Correspondents
Harlan's Patent Animal Trap
Bruce's American Foot Stove
Making Chains Without Welding
The Commissioner of Patents
Consumption and Nature of Material Used in the Manufacture of Matches
Patent Bills before Congress
Hardening and Tempering Steel--The Value of Baths
Phosphorus--Its Characteristics
Badly Planned Buildings
Patents and Claims
Issued by the United States Patent Office
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