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Features

The Sanitary Equipment and Power Plant of a Modern Lodging House

The Porosity of Vulcanized Rubber

Preventing Condensation on Windows

Machine for Picking Macadam Roads

The Perpetual Calendar in the Reichstag

Cabinet-Making Schools in Germany

Iron and Steel Rails in America

By Robert W. Hunt

Comparative Cost of Combination and All-Steel Highway Bridges

Our Trade with our Island Possessions

The International Catalogue of Scientific Literature

The Pavilion of Germany at the Paris Exposition

The Exhibit of the Dutch East Indies at the Paris Exposition

Egyptian Temples

By Alexander Payne

Selected Formulæ

Trade Suggestions from United States Consuls

Legislation for the Protection of Birds other than Game Birds

Separation of Xiphopagous Twins

Oxygen and Germination

The Mauser Automatic Gun

Bacteriological Notes

The Development of Agricultural Libraries

Patents!

Departments

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    American Engineering Competition

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August 11, 1900

Beyond XX and XY

Beyond XX and XY

Biology. Identity. Equality.