Volume 12, Issue 30
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Features
Caution
Action of Light on Muscular Fiber
Sendzimir's Submarine Thoroughfare
The Zodical Light
Remedial Agents--Calomel
List of Patent Claims
More on the Speed of Mill Stones
Instability of the Earth
Price of Post Office Orders
Artichokes
Complimentary Notice
Combined Steam--Wethered System
Patented Articles and the Pedler Laws
Shot Manufacture
Contagion and Quarantine
Mammoth Cave--The Bottomless Pit
Horse Power of Engines
The Divining Rod Again
Backlash
Milk as a Manufacturing Ingredient
Broughton's Sash Fastener
Iron Architecture
The Adriatic
Exhibition of the Metropolitan Mechanics' Institute, Washington, D. C
Correspondents
Explosion of the Locomotive Hecla--Its construction
Sugar Gunpowder
Lowering Boats at Sea
Mechanics
Inventors, and Manufacturers