Scientific American Magazine Vol 109 Issue 2

Scientific American Magazine

Volume 109, Issue 2

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Features

Panama Canal Architecture, A Suggestion for Suburban Traffic and more

The Arches of Mexico

Relics of Early Spanish Engineering

Mary Worrall Hudson

Battleship Drill Indoors

How New York Trains Her Naval Militia

The Reflector--The Telescope of the Future

Why the Large Refractor Must Give Way to Mirrors

Edward Arthur Fath

Carrier Pigeons in the French Army

Lucien Fournier

Curious Resemblances in Nature

Harold Bastin

A Mercury Interruptor

George F. Worts

A Seconds Pendulum

C. C. Kiplinger

A Clock That Speaks the Time of Day

W. R. I.

German Inventors and Office Furniture, The International Cone of Zoology

The Industrial Need of Technically Trained Men--V

A Variety of Avenues Open to the Young Man of To-day

A. B. Quincy

Departments

Correspondence - July 12, 1913

Inventions New and Interesting - July 12, 1913

Recently Patented Inventions - July 12, 1913

New Books, Etc. - July 12, 1913

Notes and Queries - July 12, 1913