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Features

The Maxim Automatic Gun

The New Steamship Oroya

Crank Diagrams

The New Steamer Ormuz

Corrugated Tires

Water Raising Machines

Continuous Working Bag Elevator

The New Tay Bridge

The New English Multicycle

Tannin: Its Present and Future Sources

By Henry Trimble

Improved Camera Clamp and Tripod Head

The Dietzsch Cement Kiln

Technical Training Considered as a part of a “Complete and Generous Education.”

By R. H. Thurston

Aluminum Soldering

William Henry Preece

Momentary Electric Lighting

The Standard Lamp

The Measurement of the Intensity of the Magnetic Field

The Hardness of Metals

By Thomas Turner

Hendon Sewage Works

The Map of the Heavens at the Paris Observatory

Building Plans and Specifications

Grooming of Washington's Horses

The Capricious Candle

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July 16, 1887

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