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A British Opinion Concerning Power Gas

The Charlottenburg Polytechnic School's Laboratory for the Testing of Materials

By L. Ramakers

Can a Steam Turbine be Started Quicker than a Reciprocating Engine?

By A. S. Mann

The use of Boiler Compounds

By William M. Booth

Tea-Making Machinery

Economies of Mechanical Draft

Preparation and Compression of Pure Gases for Experimental Work

By R. S. Hutton and J. E. Petavel

A Novel Floating Exposition

Diamonds and the Diamond Industry

The Sense of Smell in Ants

By Adele M. Fielde

Rhythmic Movements of the Sea

By A. Berget

The Beginnings of Counting

By Levi Leonard Conant

Clay Products of the United States During 1904

Stroboscopic Observations of Alternating Current Arcs

Some Notes on Nickel-Iron and, Lead Storage Batteries and Accumulator Traction

Beginning of the New North Polar Cap of Mars

The Production of Bromine in 1904

Solar and Terrestrial Changes

Contemporary Electrical Science

Electrical Notes

Science Notes

Trade Notes and Recipes


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    September 09, 1905