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Features

The American Locomotive Export Trade

The Merits of the Water Tube Boiler

The United States and the Paris Exposition

British Interest in the Nicaragua Canal

The Mississippi Floods

Shade Trees for the Streets of New York

The Postal Congress

The Return of Mr. De Windt

The Longest Bridges

The Tragedy at the Charity Bazar, Paris

Aeronautics at the Tennessee Centennial Exhibition

The New Twin Screw Passenger Ships of the North German Lloyd Company

A Printers' Type Justifying Machine

The Kensington Bicycle

Twelve Wheeled American Locomotive for the Brazil Railway

A Miniature Caloric Engine

A Simple Method for Obtaining a Low Temperature*

By C. Edward Sage

Trinity's Bronze Doors

The Water Supply of New York City

A Toy Bird that Flies

Departments

  • Letters

    Correspondence - May 15, 1897

  • Departments

    Recently Patented Inventions

  • Index of Inventions - May 15, 1897

  • Notes and Queries - May 15, 1897

  • Business and Personal - May 15, 1897

  • Patents - May 15, 1897

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May 15, 1897

Beyond XX and XY

Biology. Identity. Equality.