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Features

Manufacture of Heavy Guns for U. S. Navy

Indoor Exercise

Poison of Snakes

By Nicolas Pike

A Foot Bath Device

Boiler Flue Flanging Machine

A Window Cleaning Brush

A Propelling Mechanism for Vehicles

An Improved Wrench

An Improved Safety Valve

An Electric Belt and Body Attachments

A Safety Bolt for Spring Latches

A Smoke Effect with a Single Lantern

A Pneumatic Flying Machine

An Improved Churn

Church Acoustics

Scientific American Building Edition- March 14, 1891

List of Architectural Books

Experimental Science- March 14, 1891

The Scientific American

Departments

  • From the Editor

    To Inventors- March 14, 1891

  • Recommended

    New Books and Publications- March 14, 1891

  • Departments

    Recently Patented Inventions- March 14, 1891

  • Business and Personal- March 14, 1891

  • Notes & Queries- March 14, 1891

  • Index of Inventions- March 14, 1891

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March 14, 1891

Think Outside the Gift Box