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Features

Improved Machine for Mitering Frames

Natural Selection-the Darwinian Theory

A New Treatise on Steel

Steamer for Common Roads-Vulcanized Rubber Tires

Circular Floating Batteries and Armored War Vessels

Neuhaus' Tailor's Rest and Seat

Answers to Correspondents

Recent American and Foreign Patents

New Publications

Manufacturing, Mining, and Railroad Items

Burgess' Patent Window Wiper

One Idea Men

New Bock Drilling Machine

Danner's Patent Pencil Guard

Is Brain Labor Peculiarly Exhausting

Treatment of Apprentices by “Old Hands”

Progress of the Art of Dentistry

Power Looms in This Country

Editorial Summary

On the Causes of Explosions Which Occur in the Pouring of Liquid Metals into Water

Patents and Claims

Issued by the United States Patent Office

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October 07, 1868

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