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Long-Span Bridges

By W. H. Burr

Progress of the Mechanic Arts in the Last Three-Quarters of a Century

By Coleman Sellers

The Dioramic Panorama of the Exposition of 1900

Electric Vehicles and their Relation to Central Stations

By H. M. Maxim

High Tensions and the Transmission of Electric Energy

Scientific Work of the United States Department of Agriculture

By Weather Bureau

Observations on St. Elmo's Fire

A Jib-Headed Mainsail Sloop Ice Yacht

By H. Percy Ashley

Extinguishing Flames by Expanding Air

Technical Education in Germany

An Improved Pressure-Recording Gage

China Silk Trade

Trade Suggestions from United States Consuls

United States Cotton Fabrics in South America

Selected Formulæ

Trade Notes and Receipts

What Science is doing for the World



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