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Scientific American Magazine Vol 67 Issue 6

Scientific American Magazine

Volume 67, Issue 6

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Features

The Vessels of Columbus

Moses S. Beach

A New Map of the Planet Mars

Electric Boats and Carriages at the Columbian Exposition

An Improved Hydraulic Press

Adjustable Embroidery Frame and Table

A New and Useful Telephone

A New Mill for Pulverizing

Ethylene

Launch of the Columbia

Fire Department "Cut-Loose"

On the Rim and in the Depths of the Grand Canyon

H. C. Hovey

Departments

Correspondence- August 6, 1892

Notes & Queries- August 6, 1892

Business and Personal- August 6, 1892

Recently Patented Intentions- August 6, 1892

New Books and Publications- August 6, 1892

Index of Inventions- August 6, 1892

To Inventors- August 6, 1892