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Features

Excelsior Detaching Apparatus, Improved Cut-off Valve, and more

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

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Dwindling Supply. Increasing Demand.

Dwindling Supply. Increasing Demand.

Solving the Water Crisis