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A Petroleum Motor Tricycle

Looking for Employment

A Spindle Support and Driving Device

An Inexpensive Broom Holder

An Improved Telephone

Portable Parlor Fountain and Flower Stand

A Curious Tombstone

New Depot of the Pennsylvania Railroad

Concurrent Electric Reports of Races

Invention in 1889 A. D. vs. Invention B. C.

List of Architectural Books

The Scientific American Publications for 1891

Experimental Science- February 14, 1891

By Geo. M. Hopkins

The Scientific American Supplement

Building Edition


  • Letters

    Correspondence- February 14, 1891

  • Departments

    Recently Patented Inventions- February 14, 1891

  • Notes and Queries- February 14, 1891

  • Index of Inventions- February 14, 1891

  • Business and Personal- February 14, 1891

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February 14, 1891

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