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The de Lesseps Monument

The History and Present Development of Wireless Telegraphy

By Greenleaf W. Pickard

Artificial Silk

By Joseph Cash

Blocking out Skies

The Homemade Windmills of Nebraska

By Erwin Hinckley Barbour

The Bad Lands of North Dakota

By Ralph S. Tarr

The Geology of the Klondike Region

By J. B. Tyrrell

German Railroads in War Time

A Naval Combat in Miniature

Dyeing Hair and Fur

The Laying of a Fifty-Nine Foot Rail

Trade Suggestions from United States Consuls

Selected Formulæ

Trade Notes and Receipts

Miscellaneous Notes

A Comparative Study of the Physical Structure of the Labrador Eskimos and the New England Indians

Atomic Weight of Nitrogen

Liquid Hydrogen and Seed Germination

Cultivation of Insect Flowers in Algeria

Nerine “Miss Wilmott.”

Experiments with Milk Preservatives

Cycle Construction and Design

By Archibald Sharp

Reminiscences of Bunsen and the Heidelberg Laboratory, 1863-1865



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