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Features

American Art in Tools

A Tea Cultivator Wanted

Mica

Steam Boiler Notes

Improvement in Tables

New Graduating Apparatus

Jointed Pitch-Board for Squares

Improved Drawing Pen

The Telephone.--Judge Lowell's Opinions Commented Upon.--Ingenious Transformations

Mechanical Inventions

New Car Coupling

Improved Curtain-Cord Tightener

Improved Mortising Machine

Velocipede Boat in the Public Garden, Boston

American Industries.--No. 77

Miscellaneous Inventions

Departments

  • Departments

    New Inventions

  • Recent Inventions

  • Index of Inventions

  • Business and Personal

  • Notes and Queries

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