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A Petroleum Motor Tricycle

Looking for Employment

A Spindle Support and Driving Device

An Improved Telephone

An Inexpensive Broom Holder

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

Experimental Science- February 14, 1891

By Geo. M. Hopkins

The Scientific American Publications for 1891

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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