Scientific American Magazine
Volume 32, Issue 8You are currently logged out. Please sign in to download the issue PDF.
Features
The Proposed Niagara Bridge at Lewiston, N. Y
Metaline at the American Institute
Accurate Alignments
Flying Machines - February 20, 1875
Bogus State Laws Concerning Patent Rights
Not the Best Way to Sell a Patent
The "Science" of Spiritualism
Irrigation in Colorado
Improved Water Motor
Measuring Mountains
Scientific and Practical Information
The Voices of Animals
Recent Researches in the Spectra of the Planets
A New Sad Iron
Improved Plenum and Vacuum Pump
Wellman's Improved Car Seat
Hayden's Revolving Cartridge Belt
A Hairy Faced Family
Ocean Telegraphy.--The Foreign Connections of New York City and the Existing Rates of Charges
Decisions of the Patent Office - February 20, 1875
The Post Office a Carrier of Merchandise
Recent American and Foreign Patents - February 20, 1875
Communications Received - February 20, 1875
Canadian Patents - February 20, 1875
Departments
Correspondence - February 20, 1875
New Books and Publications - February 20, 1875
Notes and Queries - February 20, 1875
Business and Personal - February 20, 1875
Index of Inventions - February 20, 1875
