Scientific American Magazine
Volume 30, Issue 22You are currently logged out. Please sign in to download the issue PDF.
Features
Improved Road and Farm Locomotive
Governors for Prime Movers
Pressure Not a Motive Power
Why do Plants Absorb Oxygen during the Night?
The Respiration of Oxygen
Milk as a Diet and Its Effect on the System
The American Social Science Congress
The Polar Clock--The Time of Day Shown by Colors
Hydraulic Riveting Machine
Improved Miter Machine and Frame Vise
Improved Doubletree
Jenkins' Patent Compound Hatchet
Todd's Improved Horseshoe
The Seaforthia Elegans
Recent American and Foreign Patents - May 30, 1874
Bursting of a Mountain Water Reservoir in Massachusetts--A Terrible Calamity
Answers Correspondents - May 30, 1874
Communications Received - May 30, 1874
Canadian Patents - May 30, 1874
Departments
Correspondence - May 30, 1874
New Books and Publications - May 30, 1874
Business and Personal - May 30, 1874
Index of Inventions - May 30, 1874
Patents - May 30, 1874
