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Scientific American Magazine Vol 101 Issue 19

Scientific American Magazine

Volume 101, Issue 19

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Features

Dover's Great Artificial Harbor

The America's Cup

Improvements in New york's High-Pressure Fire Service

Engineering

Electricity

Science

A Remarkable Mexican Concrete Conduit at Guadalajara

Frank C. Perkins

Some Principles of Ball-Bearing Design

J. F. Springer

Terrific Boiler Explosion in Milwaukee

A Curious Star Map

The Number of Our Ancestors

Some Curiosities of Invention

The 10,000-Ton Suction Dredger “Leviathan” for Use on the Mersey

The Attitude of Diplodocus

Birds of Passage

B. S. Bowdish

The Ophthalmo-Diaphanoscope

Testing Bitumens for Pavements

Departments

Correspondence

New Books, Etc.

Recently Patented Inventions

Patents

Index of Inventions