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Automatic Stop-Motion for Steam Engines

How to Detect Counterfeits

Recent American Patents

Extracts from Helmholtz

Merritt's Tree Protector

Condition of New York Machine Shops

The Pneumatic Loom

An Agricultural Museum at Washington

Way Flannels Become Damp

Rowes's Diaphragm Pump

The Crank Motion

The Patent Office

Lighting Paper at a Lamp

Special Notice

Balanced Slide Valves

Rogers's Rain Conductor


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