Scientific American Magazine
Volume 77, Issue 24You are currently logged out. Please sign in to download the issue PDF.
Features
Changes in United States Patent Laws
Some Curious Old Patents
The Proposed Government Armor Plant
The Dietary of Cyclists
Costly Butterflies
Involuntary Movements as Controlled by Ideas
A Pump for Pneumatic Tires
An Improved Double Grinding Mill
An Automatic Electric Time Switch
Pneumatic Mail Tube System, New York City
A Low Priced Graphophone
A "Tug of War" between Early Steamships
Trial Trip of a British Built Torpedo Boat Destroyer for the Spanish Government
The Buchanan-Gordon Diving Dress
An Improved Bicycle Brake
"Gone"
To Inventors - December 11, 1897
Departments
Notes and Queries - December 11, 1897
Business and Personal - December 11, 1897
Recently Patented Inventions - December 11, 1897
New Books, Etc. - December 11, 1897
Index of Inventions - December 11, 1897
Patents - December 11, 1897
