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Holborn Viaduct Subways

Postal Science

The Progress of the Hell Gate Excavations

A Recent Improvement in Gas Making

On the Molecular Changes Produced by Variations of Temperature

The Panic and the Laboring Classes

Scientific and Practical Information - November 15, 1873

Medical Science in Court - November 15, 1873

The Government Boiler Tests

American Lighthouses

A New Improvement in Gas Manufacture

American Academy of Sciences

Improved Frost Log Dog

Combination Corn Sheller Boot jack Etc.

Lightning Sheep Shears

The Great Bridge at St Louis

Recent American and Foreign Patents - November 15, 1873

Answers to Correspondents - November 15, 1873

Communications Received - November 15, 1873


  • Letters

    Correspondence - November 15, 1873

  • Departments

    Business and Personal - November 15, 1873

  • Notes and Queries - November 15, 1873

  • Index of Inventions - November 15, 1873

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