Features
Manufacture of Ultramarine
The Congressional Report on Isherwood's Machinery
Recent American Patents
Hitchcock's Roller Quartz Mill
Smith's Rivet
Cutter's Shuttle
Price's Pea Sheller
Great Improvements in Sugar Making
Changing Alcohol into Vinegar
Inexplicable Boiler Explosions
Power Required to Drive Machines
A Sensible Governor
The Naval Engine Contest
The Opening of the Fair
Patent Claims
Patent Agency Office
Markland's Coal Scuttle
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New Books and Publications
Patents
