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Features

The New Massachusetts State Library Building. At Boston, Mass

Expert Testimony

By William P. Mason

Perpetual Motion—I

The Paddle Steamer Walton Belle

Emperor William's Pavilion on Heligoland

Legs of Racing Cyclists

Brass Facing Zinc Half Tones and the Metal Mounting of Such Blocks

By E. L. Ectro

Rapid Processes of Unloading Artillery Material from Cars

Wind Pressures on High Buildings

Dustless Roadbeds

The Utilization of Aluminum in the Arts

Edward Drinker Cope, Naturalist

The Ant Eater in the Zoological Garden at Stuttgart

The Science of Humanity

Of the Excellence Of Humanity

By W. J. McGee

Patents!

Selected Formulæ

Departments

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