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German Marine Boiler Construction

By Frank C. Perkins

Analyses and Tests of Paper

Log-Hauling Motors

By Day Allen Willey

The Contal Nut Wrench

Fire Appliances at the Exhibition of German Cities in Dresden

The German Towns Exhibition at Dresden

Faure Type Accumulators

A Prehistoric Settlement

Tea Growing in India

Tangential Waterwheel Efficiencies

Being an Experimental Investigation of the Relative Values of Different Bucket Shapes

By George J. Henry

The Improvement in Steel Treatment

The Relations between Scientific Research and Chemical Industry


Biological Purification of Sewage Water

Electrolytic Process for Extracting Antimony from its Sulphureted Ores

An Unusual Form of Capillary Electrometer

By Emile Guarini

Electric Peculiarities of the Diamond

A Contribution to the Theory of Lightning Rods

Electrical Notes

Artificial Silk Manufacture in Germany

Engineering Notes

Australian Sponges

Trade Suggestions from United States Consuls

Trade Notes and Recipes


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