Scientific American Magazine
Volume 27, Issue 3You are currently logged out. Please sign in to download the issue PDF.
Features
Machine for Bunching, Wiring, and Inserting Bristles in Brush Backs
Smell
Phenomena Associated with a Hydrogen Flame
Cincinnati
Brick and Mortar Elevator and Distributor
Carriage Wheel
The Gatling Gun—Does History Repeat Itself?
Pressure on Foundations
Railroad Car Brake
Railroad Rail
The Domestic Telegraph
The New Patent Law of Canada - July 20, 1872
Summer Heats in Various Countries
Letter from Professor R. H. Thurston
Recent American and Foreign Patents - July 20, 1872
Departments
Correspondence - July 20, 1872
Business and Personal - July 20, 1872
Answers to Correspondents - July 20, 1872
Notes and Queries - July 20, 1872
Index of Inventions - July 20, 1872
