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Features

The Abt Rack Railway

Leading Engineering Works of the Past Year

By O. Chanute

Passages of Atlantic Passenger Steamers

Improved Road Roller

American Harbor Engineering

By George Y. Wisner

Electric Boats

The Photographic Work of Herschel and Fox Talbot

By William Lang

Postage Stamp Photographs

Recent Developments in Printing Processes

By C. H. Bothamley

Purification of Water for Industrial Purposes

Cotton Bleaching with Oxygenated Water

By M. Prud*amp*apos;homme

The Manufacture and Industrial Value of Aluminum

By J. H. J. Dagger

Experiments with Leyden Jars

Experiments Recently Made Dr. O, Lodge Before The Physical Society, London

A Balloon Accident

The Purifying Effect of Sand Filtration

By B. H. Coffey

The Archer and the Chelmon

A National Collection of Prehistoric Animals

Contraction on Solution

Lecture Experiments Illustrating Properties of Saline Solutions

By J. G. Macgregor

Silicon Films

By H. N. Warren

On the Ammonia-Soda Process

By H. Schreib

Building Plans and Specifications

Pure Phosphoric Acid

The Refining of Petroleum and Lubricating Oils

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August 15, 1891

Think Outside the Gift Box