Volume 9, Issue 17
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Features
Miscellaneous Summary
American and English Cast-Iron Guns
Scientific Information--British Association for the Advancement of Science
Sage's Yeast Riser
Greek Fire--Shell and Shot
Beam Engines
Educating Youth for Scientific Pursuits
Mechanics Masters of the World
The Ghost on Trial and Patented
American Wool and Woolen Manufactures
Recent American Patents
Patent Claims
Issued from the United States Patent-Office