Features
The Paris Exposition--As it Opened
Editorial Summary
Gleanings From the Polytechnic Association
Science Familiarly Illustrated
Steam Boilers--Their Form, Construction, and Material
Recent American and Foreign Patents
Answers to Correspondents
Extension Notices
New Publications
Eickemeyer's Improved Governor for Marine and Stationary Engines
Encouragement to Manufactures--The Newest Mode
Improvement in Mechanics' Tools
Caution
Meter and Testing Apparatus for Distilled Spirits
Mutual Assistance Among Mechanics
Dogs Versus Wool
The Sewing-Machine Manufacture--What it Has Accomplished
Business and Manufacturing Items
Estimating Guns in Horse-Power
Patent Claims
Issued from the U. S. Patent Office
How to Obtain Patents
Departments
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Correspondence
Business and Personal