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Chemical Gardens

Some Pleasing Experiments That Are Easily Performed

By S. Leonard Bastin

Danger in Shaking Hands

Cement Trade in Ecuador

Synchronous Gearing

Mechanisms of Essential Importance in the Printing Telegraph

The Mechanism of a Dream

Operations of the Mind When Volition Is In a State of Suspense

By John Bassett Chapin

Baking Paint on Steel Cars

Power from Tidal Currents in the Bay of Fundy

Medicines used by the Ancient Romans

Phosphorescent Calcium Sulphide

Winter in the Trenches

Disheartening Conditions for the Fighting Men in France

The Proposed German Nitrogen Monopoly

Electric Truck Troubles

Early Experiences of Manufacturers, and How They Have Been Overcome

By F. E. Whitney

The Sidereal Center

Zinc Wire

Artificial Seasoning of Timber

Methods and Principles Adopted for Various Materials

By Ollison Craig

Production of Iron Ore

A New System of Navigation and Nautical Astronomy

By Fritz E. Uttmark

Oceanic Tides with Special Reference to the Work of the United States Coast and Geodetic Survey

A Method of Drop Measuring Liquids and Suspensions

By R. Donald

A New Bunsen Burner

Energy Transformations during Horizontal Walking

By Francis G. Benedict and Hans Murschhauser

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    June 17, 1916

    Think Outside the Gift Box