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Improved Brick Machine
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American Breech-Loading Guns
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Effect of Saleratus on the Teeth
Supposed Meteorite
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Important Patent Case
Grinding Mill
Sewers
A Batch of Information
Feeding Paper
Improved Lubricator
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Distillation
Death of an Inventor
Hotchkiss Rake Head
Preserving Food
India Rubber
Improved Salinometer
Manufacturing Coiled Springs
Ames' Radial Grater
How to Make Ivory Soft
The Mechanical Powers
A Word about the Times
Mortality among Scientific Journals
Work for the Unemployed
Toothed Wheels
The Adriatic
Extensive Iron Government Building
Closing of the Fair of the American Institute
Musk
The Rate at which Thought Travels
Vibration around Water Dams
Philadelphia
Leprosy in Australia
Descriptive Index to Chemical Patents
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Natural Pyramids
Daguerreotypes by Lightning
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Submarine Tunnel
Warmth for the Winter
Bleaching Fibrous Materials
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Correspondents - November 21, 1857