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Features

Victor Bicycles

Position of the Planets in May

Rights of Employers to Inventions Made by their Employes

McBride's Observatory Sleeper

Prouty's Saw-Mill Dog

Proctor's Measuring Vessel

Boomer & Boschert Baling Presses

The "Florida" Heater for Soft Coal

Radley's Removable Sleigh-Runner

An Improved Velocipede

Desk Fan or Small Dental Motor

Scientific Diversions

The Mauser Magazine Rifle

Beautiful Example of Diffraction

By M. Hopkins

To Inventors- May 2, 1891

Departments

  • Letters

    Correspondence- May 2, 1891

  • Departments

    Business and Personal- May 2, 1891

  • Recently Patented Inventions- May 2, 1891

  • Notes and Queries- May 2, 1891

  • Index of Inventions- May 2, 1891

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May 02, 1891

See the World from a Different Perspective

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