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Features

Alloy of Thorium

Valuable Alloys

Sheet Brass (for Sheet and Wire)

Mining for Fossils

Cement Mortar and Concrete: Their Preparation and use for Farm Purposes

By Philip L. Wormley

Producer Gas and Gas Producers

By Charles H. Day

Contemporary Electrical Science

Methods for Increasing the Transmitter Energy in Wireless Telegraphy

Snail Cllture in Burgundy

By Jacques Boyer

Hydrodynamics: Its Evolution

Report of Isthmian Canal Commission Favoring a High-Level Canal

Europium

Machine-Made Line Drawings for the Illustration of Scientific Papers

By R. A. Daly

An Extensible Pulley

On a Tour of the Shops

Experimental Evolution

By Hugo De Vries

Some New Ideas about Food

Crystals

Trade Notes and Formulæ

Electrical Notes

Departments

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    March 17, 1906

    Think Outside the Gift Box