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The South Street Bridge, Philadelphia, PA

The Speaking Telephone in New York

Wiggins' Improved Relief and Safety Stop Valve

Prevalent Manias

Safety Valve Tests

Sewage Irrigation on a Small Scale

A New Axe

Improved Machine for Stamping Leather Goods

A New Injector for Steam Boilers

Practical Mechanism

By Joshua Rose

A New Fumigator

Improved Railroad Joint and Nut Lock

Mershon's Improved Rock Drill

A Beautiful Fern

A Snake-Eating Frog

Decisions of the Courts

New York Academy of Sciences

New Mechanical and Engineering Inventions

New Miscellaneous Inventions

New Woodworking and House and Carriage Building Inventions

Recent American and Foreign Patents

Communications Received


  • Departments

    New Books and Publications

  • Business and Personal

  • Notes and Queries

  • Index of Inventions

  • Patents

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