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Features

Improved Hoisting Machine, Inspiring of Air, and more

Arago's Plan for Proving the True Theory of Light

The Use of Ammonia as a Manure

Recent American Patents

Patent-Office Decisions

The Foot Lathe

Powell's Globe Valve

The Way the Money Market is Supplied

A Novel Store

Exhibitors at the French Fair

Petroleum as Fuel

Prosperity and Adversity of Insurance Companies

Reciprocity with the Canadas

The Cholera Coming

Patent Claims

Jelliffe's Blacking Box Holder

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