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Life-Saving Apparatus at the Recent Naval and Submarine Exhibition

Preparation of Lactic Acid

Aspects of the Planets for June

Nullification of the Patent Laws

Congressional Engineering

New Bottle Cleaner

Torpedo Boat for the Italian Government

New Nut Lock

Novel Window Blind Operator

Novel Burglar Alarm

Improved Railroad Switch

Simple Sound Recorder

By M. Hopkins

Successful Management of the Insects Most Destructive to the Orange

By C. V. Riley

The Use of Ammonia in Baking Powders and its Importance as a Culinary Agent

Agricultural Invention - May 27, 1882

Miscellaneous Inventions - May 27, 1882

Metallurgical Invention - May 27, 1882

Mechanical Inventions - May 27, 1882

Engineering Inventions - May 27, 1882


  • Departments

    Business and Personal - May 27, 1882

  • Index of Inventions - May 27, 1882

  • Notes and Queries - May 27, 1882

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May 27, 1882

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