Scientific American Magazine Vol 62 Issue 21

Scientific American Magazine

Volume 62, Issue 21

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Features

Seabury Breech Mechanism for Rapid Firing and other Guns

Profits of the Paris Exposition

America's Testimonial to France

An Improved Padlock

A Slag Escape for Tuyeres

An Improved Knife Grinding Machine

An Improved Car Coupling

An Improved Blanket Harness

A Lesson in Repousse

A Venomous Ceylon Serpent

A Modern Stage Trick

Scientific American Building Edition

Index of Inventions- May 24, 1890

To Inventors- May 24, 1890

The Scientific American Publications for 1890

Experimental Science

Geo M Hopkins

Departments

Correspondence- May 24, 1890

Recently Patented Inventions- May 24, 1890

Notes and Queries- May 24, 1890

Business and Personal- May 24, 1890

Electrical Books Recently Published

Patents - May 24, 1890