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Features

Paper-Making Materials.–II

Suggestions for the Manufacturer

By F. P. Veitch

Artificial Plastic Substances

Production of Helium from Uranium

By Frederick Soddy

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

Celestial Range Finding

Liebig as a Teacher

A Word Picture of the Great Chemist at Work

A Brief History of Wireless Telegraphy

Milestones in the Evolution of a New Art

By R. A. Fessenden

The Manufacture of Artificial Sapphires

Profitable Disposal of Sewage–Sludge

The Nature and Cause of Seasickness

By G. H. Niewenglowski

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

New Types of High-Tension Insulators

Natural Resources

A Lesson in Waste and Conservation

By O. N. Witt

The Life of the Invisible World

Trade Notes and Formulæ

Electrical Notes

Science Notes

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    January 23, 1909

    Think Outside the Gift Box