Features
Recent Photographic Improvement
Education of Workingmen
Weights and Measures
Monitors in England
Salt and Soda
Hickman's Improved Washer
New Publications
Special Notices
Humors of Business
Educating Other Nations
Breech-Loading Rifles for Sportsmen
Coal and a Substitute
Patent Claims
Issued from the U. S. Patent Office
Ryerson's Churn
Evans's Weather Strip
Conner's Screw Wrench
Mechanics
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Our Special Correspondence
New Inventions
Notes and Queries