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Arsenic in Beer

The Maple Sugar Indus Try of vermont

The Optics of Trichromatic Photography

Frogs for Market

Rhodesian White Ants

Rerolled Rails as a Market Factor

Dock Equipment for the Rapid Handling of Coal and Ore on the Great American Lakes

By Arthur C. Johnston

The Progress of the Siberian Railway

The Progress of Invention

Boiler Tools

The Tools of the Marine Biologist

Temperature of the upper Air

Aims and Methods of Study in Natural History

By Edmund B. Wilson

Plant Stems Underground

By R. Lloyd Praeger

The Tete-Rousse Glacier

A Voyage in Mesopotamia

Agapetes Macrantha

Progress of Agriculture in the United States

By George K. Holmes

Trade Suggestions from United States Consuls

Trade Notes and Receipts


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March 09, 1901

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