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New Cab

Could a Hostile Fleet Bombard New York ?

Science Teaching in Schools

Traveling Flies

The De Bay Propeller

A Chance for Inventors.--The $5,000 Car

French Pill Printing Machine

New Portable Oven

Hens' Wire Nests

The First Inventor of the Steam Gauge

The American Science Association

New Beer Faucet

Engineering Inventions

Miscellaneous Inventions

Double Treadle Attachment

Improvement in Billiard Tables


By A. W. Roberts

Mechanical Inventions


Count Louis Francois De Pourtales

The Causes of Terrestrial Magnetism

The Location of the Lick Observatory

Reasonable Diligence


  • Departments


  • Recent Inventions

  • Index of Inventions

  • Notes and Queries

  • Business and Personal

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