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Police Dogs

Canine Detectives

By Karlernst Knatz

Quantitative Vs. Qualitative Thinking

By R. W. Raymond

A Scientific Classification of Smells

The “Typical” Man who does Not Exist

The Composite of a Human Group

By R. S. Woodworth

Electricity and Light in Modern Medicine

A New Therapeutic Agent

By Theodor Schueler

Solar Vortices and Magnetic Fields.—I

Recent Study of the Sun

By George E. Hale

Exotic Dainties

Scientific Guesswork

The Value of Loose Methods

The New King's Dock at Swansea

By C. Van Langendonck

The Paris Floods and their Prevention

Heavy Electric Locomotives

Some Modern Developments

By C. L. De Muralt

Paradoxes of Acceleration

A Suggestion for the Teacher of Mechanics

By C. E. Guillaume

A New Method of Reversing Turbines

Foettinger's Turbine Propulsion System with Turbo-Transformers

Aeroplane Stability

Some New Theories

By G. H. Bryan

The Remarkable Conduct of a Drop of Mercury

Trade Notes and Formulæ

Electrical Notes

Science Notes


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