Scientific American Magazine
Volume 30, Issue 9You are currently logged out. Please sign in to download the issue PDF.
Features
Casement's Pressure Regulator for Fluids
Herschel, Tyndall, and Draper on the Sun Ray
Slippery Pavements
Patent Monopolies in Congress
To New Subscribers
Scientific and Practical Information - February 28, 1874
A Paper and Glass Debate
Whitworth Steel
Improved Movable Teeth for Saws
Hilf's Iron Permanent Way
Pipe Cutting and Threading Machine
On the Purification of Mercury
Improved Trench Braces
Casement's Improved Method of Burning Fuel
How Shall I Introduce my Invention?
Decisions of the Courts - February 28, 1874
Recent American and Foreign Patents - February 28, 1874
Answers Correspondents - February 28, 1874
Communications Received - February 28, 1874
Canadian Patents - February 28, 1874
Departments
Correspondence - February 28, 1874
Business and Personal - February 28, 1874
Index of Inventions - February 28, 1874
