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Scientific American Magazine Vol 19 Issue 12

Scientific American Magazine

Volume 19, Issue 12

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Features

Improved Portable Stump Extractor, The Chicago River Tunnel

Woodside's Patent Self-Setting Animal Trap

Manufacture of Cast Steel and Homonogeneous Iron

Special Correspondence of the Scientific American-Affairs at the Patent Office

Modern Penmanship

Telegraphing without Wires

The Bessemer Process How its Early Difficulties Were Overcome

Manufacturing, Mining, and Railroad Items

Burying Alive-Experiments with Vester's Patent Burial Case

Recent American and Foreign Patents

Answers to Correspondents

New Publications

Patent Torch for Lamp-Lighting

Stimson's Patent Butt Hinge Door Spring

A Blind Inventor

Nitrous Oxide as an Anesthetic

The Progress of Chemical Science

Hippophagy

Small Potatoes

Improvement in Water Wheels

Official Report of Patent and Claims

Departments

Correspondence

Business and Personal