Features
On a Method of Drying Glutinous Substances
Engraving with a Sunbeam
Differential Pulley Blocks
Miscellaneous Summary
New Publications
Notes on New Discoveries and New Applications of Science
The Hydraulic Properties of Megnesia
The Foot Lathe
Number 7
Habermehl's Eliptic Grate
Keller and Henderson's Ice-Making Apparatus
Recent American Patents
Fairlie's Double Locomotive
Geology of the Central Railroad Waters
The Great Paris Exhibition
The Smoke of the River
The Circuit of Carbon through Animal and Vegetable Life
Austrian Industrial Exhibition
Patent-Office Decisions
Comfortable Skating
Prof. Blot's Cooking Academy
Special Notices
Patent Claims
Issued from the U. S. Patent Office
Patent Office
Patents Granted For Seventeen Years
The Scientific American
Patent Agency Office
Departments
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Correspondence
Notes and Queries