Volume 9, Issue 21
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Features
Miscellaneous Summary
Exploded Gun
Sugar in England
Colburn's Lamp Filler
Steam on City Railroads
Prevention of Danger From Petroleum
Lake Superior Copper Workings
Opening of a New Campaign
Great Telescope and Photographs of the Moon
Lead and Water
The End of a Blockade Runner
Recent American Patents
Patents Claims
Issued from the United States Patent-Office