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The Autophone

Science as a Detective

The International Canal Congress

Magnetic Motors

The Trajectory of Molecules

A New Refrigerating Liquid from Beets

Localizing Telephone Calls

Molecular Chemistry--No. II

Underground Telegraph Wires

The Donnadieu Reciprocating Pump

A Sixpenny Phonograph

Recent Mechanical Inventions

The New York Academy of Sciences

A New Steam Hammer

Recent American Patents

Attachment for Boiler Feed Pumps

Terrestrial Gasteropods


Specimens of Turkish Pottery

Stool of Inlaid Wood and Embroidered Cloth

Asa Packer

Communications Received


  • Departments

    Index of Inventions

  • Business and Personal

  • Notes and Queries

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