
Volume 11, Issue 17
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Features
Colburn on Steam Roilers
Warren's Deep-Well Oil Pump
Polytechnic Association of the American Institute
Changing Iron to Steel by Carbonic Oxide
Farmers' Club
Mr. Ruggles at New Haven
Reed And Packard's Spring-Catch Button
A New Phrenological Bust
Costliness of Complicated Steam Engines
The Russian Monitors at Sea
Why Cake Tastes of Turpentine
Welding by Pressure
Recent American Patents
Miscellaneous Summary
Patent Claims
Issued From The United States Patent-Office