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Features

Fact and Fancy in Aeronautics

The Copyright Act

The Cape Cod Canal

Engineering

Science

The Fourth Dimension Simply Explained

The Cotton Industry of the United States

The “Michigan”--Our First “Dreadnought”

A Museum to Illustrate the Development of Mathematics

By Herbert T. Wade

A Huge Filtered Water Reservoir for London

BY THE ENGLISH CORRESPONDENT OF THE SCIENTIFIC AMERICAN.

A Good Substitute for Leather Belting

To Install a Motor in a Small Boat

By Morris Rader

How to Mend Garden Hose

By J. A. Bergstrom

Handy Man's Surveying Instrument

By August Mencken

A Home-Made Spray Outfit

By Charles A. Umoselle

Departments

  • Departments

    The Heavens in July 1909

  • New Books, Etc. - July 3, 1909

  • Recently Patented Inventions - July 3, 1909

  • Notes and Queries - July 3, 1909

  • Index of Inventions - July 3, 1909

  • Patents - July 3, 1909

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July 03, 1909

Reanimate Your Brain

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