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Railroad Suspension Chair, Disappearance of a Nebula

Notes on Military and Naval Affairs

Polytechnic Association of the American Institute

Kepner's Feathering Paddle Wheels

The Best Gun

The Great Troy Fire--Iron Safes Destroyed

Extension of Patents--For Whose Benefit They Are Granted

General Totten on the Ship and Fort Question

Proposed Amendments to the Canada Patent Law System

Patent Law Reform in New Brunswick

The Way the Gold Deposits of California Were Formed

Recent American Inventions

Patent Claims

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May 31, 1862

Music's Mysterious Power

Music's Mysterious Power

Emotional. Cognitive. Therapeutic.