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An Old Town in Shantung Occupied by the Germans

Australian Diamonds

A Novel Commercial School

How to Keep a Floor

Koontee, the Seminole Bread Root

By Charles H. Coe

Improved Radiographic Apparatus

Electric Propulsion at Paris

Aluminum as a Rival of Copper and Brass for Electrical Conductors

By Alfred E. Hunt

Cost of Macadam Roads in Massachusetts

Engineering Notes

Selected Formulæ

Electrical Notes

The Tasker & Snow Segmented Shaping and Polishing Wheels

Hydraulic Forging Press and Engines

One Hundred Years of Ginning and Baling Cotton


By George A. Lowry

Experiments on the Working of Gas Engines

A New Road Roller

Power Required for Driving Vehicles

Tapered Hole Widening Machine

Love Jousts among the Grouse

By G. Archie Stockwell


Decrease of Bird Life in Thirty Years


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