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The Pan-American Exposition

Atmospheric Electricity and Disease

The Electric Illumination of the Pan-American Exposition

Electric Launches in Venice

Railway Carriage making Machinery

The Railways of Africa

Automatic Lubricator

The Care and Handling of Inflammable Substances

By Joseph F. Hostelley

Trade Suggestions from United States Consuls

An Official Ink

Trade Notes and Receipts


Selected Formulæ

Power Consumption and Operative Costs of Autombile Delivery Wagons

By George F. Sever

The Automobile as seen by the Caricaturist

Educational Values

The Budapest Acetylene Exposition

Norwegian Skee Jumping and Racing

A New Radiographic Bulb

One Hundred Years of Achievement in American Glass Manufacture

By C. A. Tatum

The Neolithic Epoch in Ancient Egypt


By Charles Davison


Dendrobium Spectabile

Tomato Products

Heat-Stroke and Sun-Stroke

Stratification in Vacuum Tubes



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April 21, 1900