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The Appointment of a Commissioner of Patents

Theodor Mommsen, Octogenarian

Chemistry in 1897

Photographic Formulas

The Pneumatic Tire

Lambert's Gliding Boat

A Large Boring Mill

Auxiliary Engines and Transmission of Power on Naval Vessels

By George W. Dickie

A Lack of Whalebone

Story of the Yukon

Getting into the Yukon

Bacteriology in 1897

Castanopsis Chrysophylla

A Review of American Electrical Progress during the Year 1897

The United States Fish Commission Salinometer

Electrical Notes

Engineering Notes

Selected Formulæ

House Flies, Gnats and Mosquitoes as Destroyers of Pathogenetic Microbes

The use of Aluminum in the Brass Foundry


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