Scientific American Magazine
Volume 45, Issue 4You are currently logged out. Please sign in to download the issue PDF.
Features
Union Arch, Washington Aqueduct
Fulminating Compounds
Poisonous Refreshments
The Manufacture of Celluloid
Separation of the Comet
Steam Boiler Notes
Centripetal and Centrifugal Motions in Animals
Mechanical Inventions
New Glove Fastener
Improved Spring Hinge
New Mechanical Movement
Collapse of a Steel Boiler Flue
New Tire Tightener
Agricultural Inventions
Phosphorescent Substances
Electro-Massage
Improvement in Buttons
New Reflector for Suspended Lamp
Miscellaneous Inventions
Dynamic Electricity
Volumetric Assay of Bullion, Alloys, Etc.
Engineering Inventions - July 23, 1881
Departments
Recent Inventions
New Inventions - July 23, 1881
Notes and Queries - July 23, 1881
New Books and Publications - July 23, 1881
Business and Personal - July 23, 1881
Index of Inventions - July 23, 1881
