Volume 13, Issue 27
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Features
Ancient Silver Mine
Will the Atlantic Telegraph Cable operate?
What is Chemistry?
American Lap-Welded Iron Tubes
Gravitation and Velocity
Independent Engines and Pumps in Locomotives
Silver and its Uses
Operation on an Elephant
Glucose and Sirup
Screw-mouthed Bottles
Recent Patented Improvements
New Inventions
New Gas Works
Death of Commodore Perry
Heating Buildings and Ventilation
Business Prospects
Gas Meters
Dr. Livingstone's New African Expedition
Explosion of an Air Chest
Mode of Connecting Telegraph Cables
Death of an Editor
Anilic Acid
Proposed Changes in Patent Laws
Challenge to Inventors of Breech-Loading Guns
Circular Saw Mills—Patent Decision
Glaciers
Puddling and Boiling Iron
The Coming Eclipse
Momentum
The Cold Deep Sea
Stalactites
Wright's Apparatus for Feeding Furnaces
Mechanics
Inventors, Manufacturers, and Farmers