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Features

Improved Rotary Engine, The French Government as a Manufacturer and More

Miscellaneous Summary

The Hecker and Waterman Experiments

Photographic Items

Clumsy Packing Rings

The Products of Combustion for Motive Power

Experiments With Tools Needed

Mr. Jerome's Yacht

The Year 1863

Philosophy in a Cup of Tea

Patent Claims

Issued From The United States Patent-Office

Recent American Patents

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    Correspondence

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August 13, 1864

Think Outside the Gift Box