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The Pneumatic Clock

People Who Can't be Helped

Steam on the Common Roads

Working of Copper Ores

Conference of Swiss Wrists at Geneva

A Promising Field for Invention

Cuba as a Field for Enterprise

American Dexterity

An Inventor's Difficulties in England

The "True Thread"

Testing Machines at the Paris Exhibition

The Recent Eclipse of the Sun

Astronomical Notes

Penn Yan, N. Y., Saturday, October 5, 1878

By Berlin H. Wright

How to Test a Lathe

The Stylographic Pen

Zoological Garden at Fairmount Park, Philadelphia, How Calicoes Are Made, and more

The Porcupine Ant Eaters Recently Discovered in New Guinea

The New Carpet Beetle


  • Departments

    Notes and Queries

  • Business and Personal

  • Index of Inventions

  • Patents

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