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Suspension Bridges of the World

Markets for the Month

New Publications

Lakin's Water-Wheel Regulator

Van Kanel's Cherry Stones

Special Notices

Improvements in Gold and Silver Amalgamating

By Thomas Betty

Solid Floating on Molten Iron

Boiler Explosions on Western Waters

Velocity of Mechanism

The Proper Temperature for Churning Butter

Patent Claims

Issued from the U. S. Patent Office


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April 07, 1866

20% Sitewide for President's Day