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Features

Sternberg's Electro-Magnetic Regulator for Dampers and Valves, Hirn's Telodynamic Cable, and more

On the Science of Sleep and Dreams

Mountain Locomotive

The Migratory Locusts and their American Cousins

By Edward C. H. Day

The Science of Going to War--How Prussia Is Superior to France

The True Theory of Flying

Diamond Cutting in Amsterdam

Melendy's Improved Combined Key Ring and Door Fastener with Compensator

The Uses of Sulphurous Acid

Effect of Association upon Mental Development

Pen Stammering

Who make Mistakes?

Death of Professor Palmstedt

The Use of Torpedoes for Coast Defense

The Commissioner Suspends a Patent Agent for Gross Misconduct

Radiation of Heat

The Present European War

Scientific Intelligence- August 27, 1870

American Association for the Advancement of Science

Answers to Correspondents- August 27, 1870

Official List of Patents- August 27, 1870

Recent American and Foreign Patents- August 27, 1870

Applications for the Extension of Patents- August 27, 1870

Departments

  • Letters

    Correspondence- August 27, 1870

  • Recommended

    New Books and Publications- August 27, 1870

  • Departments

    Business and Personal- August 27, 1870

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August 27, 1870

Complex Causes. Alternative Solutions.