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As Others See Us

Naval Annuals of 1909

Good News from Panama

Electricity

Science

Engineering

Baseball at Night

The First Attempt at a Cross-Channel Flight and New French Cross-Country Records

Construction of an Ellipse

Speed of the Mauretania

How the Peace Could be Kept Internationally

A New Process for Damascening, Inlaying, and Blending Metals

BY THE ENGLISH CORRESPONDENT OF THE SCIENTIFIC AMERICAN.

The First of the 1909 Flights for the Scientific American Trophy

Handy Man's Workshop

A Ladder Extension Leg

By I. G. Bayley

Automatic Lubricating Cup

By W. J. C.

Device for Removing Broken Wood Screws

By G. H. Sinclair

Experiments with Alternating Current, Using a Small Direct-Current Motor

By F. P. M'dermott

Departments

  • Departments

    Correspondence - July 31, 1909

  • The Heavens in August

  • Index of Inventions - July 31, 1909

  • Patents - July 31, 1909

  • Recently Patented Inventions - July 31, 1909

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July 31, 1909

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