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Features

Improvement in Steam Engines

The Self-Acting Norwegian Cooking Apparatus

On the Distribution of Copper in the Animal Kingdom

The Science Association

The Story of a Boulder

Apparatus for Generating Illuminating Gas from the Light Hydrocarbons

Observations of the Eclipse as Seen at West-Port, KY

Duration of the English Coal Fields—The Internal Temperature of the Earth

Dyeing Silks—Preparation of the Raw Silk Previous to Dyeing

Fire and Rat-Proof Buildings

Improvement in Buckets

The Effects of Night Soil on Vegetation

Business Hints

The Street Crossing Question

Heat and Work

Incidental Observations

Location of Heaven

Marks Produced upon the Body by Lightning Stroke

Calculations About Human Life

Ocean Telegraphy

Editorial Summary

Oxford Wins

Answers to Correspondents

Manufacturing, Mining, and Railroad Items

Injunction in Patent Cases

Recent American and Foreign Patents

New Publications

Official List of Patents

Issued by the United States Patent Office

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    Correspondence

  • Business and Personal

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