Volume 36, Issue 14
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Features
A Curious History of an Old Inventor
The Blue Glass Epidemic
The Preservation of Learning
Publishers' Notice to Mail Subscribers
American Inventive Progress
Exhibition of Microscopes
On Keeping an Index
New French Woodworking Machines
Straightening Metal Plates
Communications
Stone-Working Implements
Improved Vehicle Springs
New Lubricant-Testing Machine
Some Members of the Lizard Family
The Separation of Cobalt from Nickel by Colorimetric Test
Astronomical Notes
New York Academy of Sciences
Recent American and Foreign Patents
NEW MECHANICAL AND ENGINEERING INVENTIONS