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Bell's Photophone

The Prall System of Heating

The Restoration of Our Commercial and Naval Marine

Patent Royalties on Shoe Machinery

Electro-Brass Plating

Engineering Inventions - January 1, 1881

Automatic Governor for Waste Water Pipes

Cremation Temple

Mechanical Inventions

The Growth of Large Elms

Agricultural Inventions

Novel Road Engine

Improved Hinge


By A. W. Roberts


  • Departments

    Recent Inventions - January 1, 1881

  • Notes and Queries - January 1, 1881

  • Business and Personal - January 1, 1881

  • New Books and Publications - January 1, 1881

  • Index of Inventions - January 1, 1881

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