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Features

Increasing the Bridge facilities

Patents in Congress

Malarial Fevers

Uneven Shrinking

New Scientific American Offices

Corn Planter

Removable Bottle Trap

Improved Valve Oiler

Improved Fence Post

Panclastite

Improved Warping Machine

Central France under the Clouds

An Improved Crutch

Window Bead Fastener

Ripping attachment for Scissors

Agricultural Inventions - April 12, 1884

Special - April 12, 1884

Miscellaneous Inventions - April 12, 1884

Mechanical Inventions - April 12, 1884

Engineering Inventions - April 12, 1884

Departments

  • Letters

    Correspondence - April 12, 1884

  • Recommended

    New Books and Publications - April 12, 1884

  • Departments

    Notes and Queries - April 12, 1884

  • Business and Personal - April 12, 1884

  • Index of Inventions - April 12, 1884

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April 12, 1884

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