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Features

The Book Carriers of the New Library of Congress Building

By E. J. Prindle

Deceptive Methods of Patent Attorneys

Extension of Our South American Trade

Prosperity

The Proposed Rapid Transit Tunnel, New York City

A Successful Solution of the Locomotive Counterbalance Problem

Official Registration of Patent Attorneys

Railway Mail Catcher and Delivery Devices

Air Brake Instruction Car on the "Big Four Route"

The Seagoing Ferry "Pere Marquette"

A Nail Holding Device for Hammers

Black Art

By William B. Caulk

To Inventors - August 21, 1897

Departments

  • Recommended

    New Books, Etc - August 21, 1897

  • Departments

    Recently Patented Inventions - August 21, 1897

  • Index of Inventions - August 21, 1897

  • Notes and Queries - August 21, 1897

  • Business and Personal - August 21, 1897

  • Patents - August 21, 1897

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Introducing Scientific American Health & Medicine

Introducing Scientific American Health & Medicine