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Features

Improved Planing and Matching Machine

Improved Shot Pouch Sling

Don't Kiss the Baby!

The Vacuum an Absolute Non-Conductor of Electricity

Temperature of Ignition of Charcoal

Postal Detective Service

Scientific Facts and Speculations

Seeing Through Colored Glasses

The Underground Railway, New York City

NUMBER VII.

Road and Farm Locomotives and Steam Road Rollers

Finishing Locomotive Wheels

Wool Washing Machinery

New Swimming Bath in London

Astronomical Notes

Glue

Decisions of the Courts

United States Circuit Court.--District of Massachusetts.

Recent American and Foreign Patents - January 2, 1875

Repeal of Patents--Opinion of the Attorney General

Answers to Correspondents - January 2, 1875

Communications Received - January 2, 1875

Canadian Patents - January 2, 1875

Departments

  • Index of Inventions - January 2, 1875

  • Recommended

    New Books and Publications - January 2, 1875

  • Departments

    Business and Personal - January 2, 1875

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January 02, 1875

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