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Ship Transit Across the Isthmus


New York Electrical Subways

Watchcase Spring

Check Row Corn Planter

Measuring Wheel

Discharge Pipe for Vaults

Drawer Check and Support

Lamp Filling Attachment for Oil Cans

Clip Coupling for Vehicles

Fence Wire Tightener

Improved Quilting Frame

Fireworks with Dramatic Accessories

Polarized Light

Simple Instrument For The Examination Of Microscopic Objects

By Geo. M. Hopkins

The Art of Pitching in Baseball

By Henry Chadwick

Driving Apparatus

Photographic Notes - July 31, 1886


Engineering Inventions - July 31, 1886

Miscellaneous Inventions - July 31, 1886

To Inventors - July 31, 1886


  • Letters

    Correspondence - July 31, 1886

  • Recommended

    New Books and Publications - July 31, 1886

  • Departments

    Business and Personal - July 31, 1886

  • Index of Inventions - July 31, 1886

  • Notes and Queries - July 31, 1886

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