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Improvement in Road Steamers

Scientific Use of the Imagination- November 19, 1870

By John Tyndall

Professor Tyndall's Lecture on Electrical Phenomena

The Stereoscope

Progress of Invention Abroad- November 19, 1870

Scientific Intelligence- November 19, 1870

Device for Spreading Circular Saw Teeth

Power's Endless Ladder Hod Elevator

Bourne's Spherical Steam Engine Governor

The Motive Power of Expanding Gases

How Long Shall Nitro-Glycerin Continue Its Work of Destruction?--The Fairport Explosion

Roads and Road-Making

Resignation of Commissioner Fisher

Time and Distance

Attempt to Abolish the Patent Office

Letters from the South- November 19, 1870

Razing Band Saws

Answers to Correspondents- November 19, 1870

Queries- November 19, 1870

Recent American and Foreign Patents- November 19, 1870

Official List of Patents- November 19, 1870


  • Letters

    Correspondence- November 19, 1870

  • Recommended

    New Books and Publications- November 19, 1870

  • Departments

    Business and Personal- November 19, 1870

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