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Features

Canaigre Growing in Southwest United States

By John E. Bennett

School Gardens in Sweden

Geology and Geography at the Denver Meeting of the American Association for the Advancement of Science

By E. O. Hovey

Australian Opal and Opal Mining

By John Plummer

Australian Gem Stones

The Food of Nestling Birds—Bluebirds, Robins, and House Wrens

By Sylvester D. Judd

The Mycenæan Question

Men and Microbes

By E. Stenhouse

Polylithic Sculpture

The Empire of the Air

The Beet Sugar Industry

St. Ulrich and the Industries of Grödnerthal

By Emil Terschak

Stage Bridges at the Covent Garden Opera House, London, England

The Cultural Value of Engineering Education

By Frank O. Marvin.

Contemporary Electrical Science

The Circum-Etna Railway

Centenary of the First English Railroad Act

The New Penarth Coal Tips

A Lubrication Regulator

Cotton Seed Manufacture, with Suggestions to Inventors and Economists

By Edwin Lehman Johnson

Trade Notes and Receipts

Trade Suggestions from United States Consuls

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