Volume 11, Issue 3
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Features
Scientific Notes
List of Patent Claims
Discovery of a Dangerous Reef
History of the Telegraph Difficulties and Success of an Inventor
Oil Used on Railroads
Encroachments on the Patent Office
The Weight of Castings by Patterns
Recent Foreign Patent Law Cases
Types of Hard Metal
New Air Spring for Railroad Car
Improvement in Windmills
The Scientific American Prizes
Engineer and Machinists Drawing Book
Iron Girders
The United States Patent Office
War Projectiles-New Shells and Cannon
The Plague; Its Origin and Disappearance
A Word to Old and New Friends
Splendid Cash Prizes
Physical Effects of a Bombardment
Railroad Accidents in England
Improvement in Government Firearms
Lighting Streets by Electricity
American Association for the Advancement of Science.--No. 5
Mechanics
Inventors and Manufacturers