Volume 25, Issue 8
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Features
Hydraulic Buffer for Checking the Recoil of Heavy Guns
What is Steel ?
The East London Museum of Science and Art
Emile Prevost's New Battery
Shaw's Compound Propeller Pump
W. H. Windsor's Printer's Chase
Boiler Explosions
Combustibility of Diamonds--Various Effects Produced by High Temperatures
The Disposal of Sewage
How to Become Bankrupt by Manufacturing
A New Bleaching Process
Electrical Organ Blowers and Sewing Machine Motors
The Approaching Fair of the American Institute
The Patent Agency Business
A New Idea in Safes
Interesting Extension Cases--New Rules and Regulations
Answers to Correspondents- August 19, 1871
Queries- August 19, 1871
Recent American and Foreign Patents- August 19, 1871
Official List of Patents- August 19, 1871
Issued by the U. S. Patent Office