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An Electrical Gyroscope

By Geo. M. Hopkins

Do Inventions Injure the Laborer?

Professor Joseph Henry

Clearance and Compression

Meddlers in Arts in Which They Are Not Skilled

Astronomical Notes

By Berlin H. Wright

The Empire Dustless Ash Sifter

Russian Torpedo Boats

Andrews' Draught Apparatus for Stoves

Improved Mosquito Net Frame


Notes on the Telephone

By L. L. Duerden

Improved Vertical and Horizontal Vise

The Roberts Engine

New Collapsing Boat

The Ant Bear

Cigarette Making by Machinery

American Steam Fire Engines

Recent Eruption of Mount Hecla

Perpetual Motion

Some Recent Facts About Common Poisons

Observations on the Transit of Mercury of May 6, 1878

By Alfred M. Mayer and J. Walter Wood

Communication Received


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    Business and Personal

  • Notes and Queries

  • Patents

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June 01, 1878

20% Sitewide for President's Day