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Features

Automatic Damper Regulator, Important Patent Decision, and more

Tripler's Railroad Tie

Scientific Use of the Imagination

By John Tyndall

The Power of Modern Skill in the Mechanic Arts

The Great Suspension Bridge between New York and Brooklyn--Progress of the Work--Its Present Condition--Some Account of the Method of Procedure

Blackboards

Hutchinson's Locking Grate Bar

Power of Prime Motors

The World's Work, and Its Moral Necessity

The People Who Attend Fairs

Rating Steam Engines

Chemistry at the Fair of the American Institute

Transportation of Fresh Meats and Fruits, Etc., through Long Distances--The Davis Refrigerator Car

Death of Three Distinguished Chemists

By Augustus Matthiessen

Diamond Mining in South Africa

Answers to Correspondents- November 12, 1870

Applications for the Extension of Patents- November 12, 1870

Official List of Patents- November 12, 1870

Recent American and Foreign Patents- November 12, 1870

Departments

  • Letters

    Correspondence- November 12, 1870

  • Departments

    Business and Personal- November 12, 1870

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November 12, 1870

See the World from a Different Perspective

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