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Scientific American Magazine Vol 37 Issue 17

Scientific American Magazine

Volume 37, Issue 17

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Features

An Obelisk at Sea

Improved Automatic Fire Escape

The Science of Play

Curious Animal Relationships

Imitation Terra Cotta

Influence of the Spinal Cord on Bodily Temperature

Another Traveling Expedition

The Duties of the Commissioner of Patents and the Supervising Powers of the Secretary of the Interior

Amateur Observations of the November Meteors

Allan's Pressure Gauge

Improved Double Shedding Harness Jacquard Loom

Improved Ship's Speed Indicator

A New Dredging Apparatus

New Electrical Machines

Improved Safety Alarm and Door Bell

The Cosmograph

Improved Window Fastener

Orchids

New Miscellaneous Inventions

Recent American and Foreign Patents

New Mechanical and Engineering Inventions

New Household Inventions

Communications Received

Departments

New Books and Publications

Business and Personal

Notes and Queries

Index of Inventions