Skip to main content

Features

Editorial Correspondence

The Nashville Suspension Bridge

Science Familiarly Illustrated

Turning a Movable Wheel Around a Fixed Wheel

Manufacturing Mining and Railroad Items

Recent American and Foreign Patents

Answers to Correspondents

Bruce's American Foot Stove

Making Chains Without Welding

Harlan's Patent Animal Trap

Badly Planned Buildings

The Commissioner of Patents

Phosphorus--Its Characteristics

Consumption and Nature of Material Used in the Manufacture of Matches

Hardening and Tempering Steel--The Value of Baths

Patent Bills before Congress

Patents and Claims

Issued by the United States Patent Office

Departments

  • Departments

    Business and Personal

Purchase To Read More

Already purchased this issue? Sign In to Access
Select Format
February 29, 1868

See the World from a Different Perspective

Subscribe to Scientific American MIND