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Watertown, N. Y., and its Water Power

Is Consumption Contagious?

“A Militia for the Sea”

The Cotton Manufacture

Opening of the Paris Electric Exhibition

A Remarkable Instance of Retention of Heat by the Earth

By H. C. Hovey

Schaeberle's Comet

Improved Door Latch

Mechanical Inventions

Improved Filter

Improved Shutter-Worker

Temporary Steering Apparatus of H.M.S. Bacchante

Improved Spring Bed

How to Make Good Cider and to Keep it

Novel Machine for Demagnetizing Watches

The Guacharo, or Oil Bird

Miscellaneous Inventions

Communications Received


  • Departments


  • New Inventions

  • Business and Personal

  • New Books and Publications

  • Index of Inventions

  • Notes and Queries

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August 27, 1881

Of Shamrocks and Science

Happy St. Patrick’s Day