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Features

Improved Milling Machine, The American Fur Trade, and more

Miscellaneous Summary

Exploded Gun

Colburn's Lamp Filler

Sugar in England

Opening of a New Campaign

Lake Superior Copper Workings

Prevention of Danger From Petroleum

Steam on City Railroads

The End of a Blockade Runner

Lead and Water

Great Telescope and Photographs of the Moon

Patents Claims

Issued from the United States Patent-Office

Recent American Patents

To Our Readers

Departments

  • Departments

    New Books and Publications

  • Correspondence

  • Notes and Queries

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