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Features

Chasing Screw Threads

Progress and Prospects of Solar Chemistry

An Immense Telegraphing Establishment

Report of the Commissioner of Patents - March 6, 1875

What are Bacteria?

A New Style of Book-Making Needed

Improved Lady's Work Table

Improved Sad Iron

A Machine Horse

Scientific and Practical Information

Ants

Life-Preserving Mattress

Improved Bale Tie for Wire Bands

Improved Self-Heating Fluting and Sad Iron

Cylindrical Standard Gages

The Breton Cattle

Decisions of the Patent Office - March 6, 1875

Recent American and Foreign Patents - March 6, 1875

Canadian Patents - March 6, 1875

Communications Received - March 6, 1875

Departments

  • Letters

    Correspondence - March 6, 1875

  • Recommended

    New Books and Publications - March 6, 1875

  • Departments

    Business and Personal - March 6, 1875

  • Notes and Queries - March 6, 1875

  • Index of Inventions - March 6, 1875

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Bacterial Balancing Act

Bacterial Balancing Act

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