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Features

The South Street Bridge, Philadelphia, PA

Wiggins' Improved Relief and Safety Stop Valve

The Speaking Telephone in New York

Prevalent Manias

Sewage Irrigation on a Small Scale

Safety Valve Tests

A New Injector for Steam Boilers

A New Axe

Improved Machine for Stamping Leather Goods

Practical Mechanism

By Joshua Rose

A New Fumigator

Mershon's Improved Rock Drill

Improved Railroad Joint and Nut Lock

A Snake-Eating Frog

A Beautiful Fern

Decisions of the Courts

New York Academy of Sciences

Recent American and Foreign Patents

New Woodworking and House and Carriage Building Inventions

New Miscellaneous Inventions

New Mechanical and Engineering Inventions

Communications Received

Departments

  • Departments

    New Books and Publications

  • Business and Personal

  • Notes and Queries

  • Index of Inventions

  • Patents

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June 09, 1877

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