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Features

New form of Aerials for Wireless Telegraphy

By C. C. Hutchins

Scherzer Rolling-Lift Bridges

The New Structure at Buenos Ayres

By F. C. Coleman

Light and Electromagnetism

Electric Waves and the Electromagnetic Theory of Light

Crystals of Hemoglobin

The “Mico” Reciprocating Meter

Measuring a Piston's Travel

Steam Turbines.—III

Their Development During the Last Twenty-Five Years

By Gerald Stoney

Home-Made Vinegar

Simple Ways of Making a Useful Condiment

By B. Fallot

Prevention of Defects in Iron Castings

By F. Mascord

How Fish are Hatched.—I

Fish-Cultural Practices in the United States Bureau of Fisheries

By John W. Titcomb

A New Type of Variable Speed Motor

Preservative Treatment of Farm Timbers

What Every Farmer Should Know

By C. P. Willis

A Domestic Washing-Machine

What we know about the Earth.—II

Many Puzzling Questions Answered by Science

By E. Weichert

Flood Drainage in Paris

Matanuska Coal Field

Electrical Notes

Engineering Notes

Trade Notes and Formulæ

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    August 27, 1910

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