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Scientific American Magazine Vol 15 Issue 19

Scientific American Magazine

Volume 15, Issue 19

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Features

Improved Magnetic Combination Lock, Method of Lighting Theatres, and more

Abattoir for New York

Miscellaneous Summary

The Madstone--A Delusion

The Anthistometer or Measurer of Resistance

The Markets

English and American Guns

Boiler Explosions Not Always Mysterious

The Use of Fuel--Management of Bitu Minous Coal

New Publications

Patent Claims

Peck's Patent Patched Bullet

Departments

Correspondence

New Inventions

Notes and Queries