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Novel Device for Heating and Ventilating Rail Road Cars, Improvement in Mandrels for Turning

The Ice Trade

Johnson & Froggott's Patent Horse Shoe

Can Water be Solidified by Pressure?

Chromo Lithography

Editorial Summary

Answers to Correspondents

Recent Americans and Foreign Patents

Manufacturing, Mining, and Railroad Items

Proposed Railroad Suspension Bridge Across the Hudson River, East Indian Opium.

A British American Inter-Oceanic Railway

The North Pole and its Seekers

Prehistoric Archeology

New and Important Patent Office Rule

Alcohol its Nature, Uses, and Effects

American Silk Manufacture

Literature for Workingmen

Weather Prophesying

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Isued by the United States Patent Office

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October 28, 1868

See the World from a Different Perspective

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