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Features

Paper-Making Materials.–II

Suggestions for the Manufacturer

By F. P. Veitch

Production of Helium from Uranium

By Frederick Soddy

Artificial Plastic Substances

The First Paris Aeronautical Salon

An Interesting Collection of Novelties

Aeroplane Design and Construction

The Design of Cylinders for the Storage of Carbonic Acid

By Reid T. Stewart

Dividing Head for use with the Lathe

Oil Engines

The Commercial Progress of a New Prime Mover

By W. A. Tookey

The Training of Divers

The Work of the British Naval School

Some Recent Inventions as Applied to Modern Steamships

By W. Carlile Wallace

The Messina Earthquake

Prediction and Protection

By Thomas A. Jaggar

Liebig as a Teacher

A Word Picture of the Great Chemist at Work

Celestial Range Finding

A Brief History of Wireless Telegraphy

Milestones in the Evolution of a New Art

By R. A. Fessenden

Profitable Disposal of Sewage–Sludge

The Manufacture of Artificial Sapphires

New Types of High-Tension Insulators

Sugar Consumption in the United States and the Sources of its Supply

The Nature and Cause of Seasickness

By G. H. Niewenglowski

The Life of the Invisible World

Natural Resources

A Lesson in Waste and Conservation

By O. N. Witt

Electrical Notes

Trade Notes and Formulæ

Science Notes

Departments

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    January 23, 1909

    20% off for Memorial Day