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Features

The Future of the Submarine

Some Practical Difficulties

A New Kind of Ferry Boat

Railway Car Ferries Between Germany and Sweden

By F. C. Coleman

Methods of Wood Preservation

An Ounce of Rust Prevention

A Successful Marine Producer-Gas Plant

A Brief Account of the “Marenging

Imitation Arms and Armor.—II

How to Make them at Home

By A. Roze

Old and New Rome

Some Recent Archeological Discoveries

The Electrical Properties of Flames

A Summary of Prof. Wilson's Studies

Medical Fees in Olden Times

Ants and Bees as Pets

A Curious Hobby for Amateurs

By Percy Collins

Artificial Cyclopism

Studies of Electricity and Matter

A Resume Of Recent Investigation

By J. J. Thomson

The Automatic Telephone

The Girl-Less Central Office

By Snowden B. Redfield

Pickering's Lunar and Solar Photometric Researches

Hocus Pocus Mutterings

Some Old Conjurers' Formulae and Magic Utterances

By Arthur Watson

Trade Notes and Formulæ

Electrical Notes

Engineering Notes

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    September 04, 1909

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