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Scientific American Magazine Vol 81 Issue 1

Scientific American Magazine

Volume 81, Issue 1

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Features

Speed and Air Resistance in Cycling

A Pertinent Question

A False Alarm

Science and Spiritualism

The Transplantation of Nerves

Prevention of Collisions at Sea

Meeting of the American Association for the Advancement of Science

Water-Tube Boilers for our Warships

Lieut. G. L Carden

Armor Plate for Bank Vaults

Method of Transferring Photographic Films

Automobile Brougham for a City Physician

An Improved Hanger for Grindstones

An Ingenious Bicycle Gear

The Mosasaurs

L. P. Gratacap

The Mossberg Tire-Bell

The Theory and Construction of Ball Bearings

W. H. Hale

Typical Perpetual Motion Fraud

The Proposed East River Tunnel

"Deutschland"--The Latest and Fastest of the Transatlantic Liners

Departments

Recently Patented Inventions - July 1, 1899

Index of Inventions - July 1, 1899

Business and Personal - July 1, 1899

Notes and Queries - July 1, 1899

New Books, Etc - July 1, 1899

Patents - July 1, 1899