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The Battle of Velestino

Submarine Telegraphy during War

Pumping Engines for Rotterdam

The Luciphore—For Distributing Ignited Matches

A Coin-in-the-Slot Gas Meter

A Sixty Pound Railway Inspection Car

Contributions to the Bibliography of Photography in Colors

By Thomas Bolas

The Moorish Castle at Cintra

The Mont Blanc Observatory

Tournament of Austrian Hussars

Statistics of the Coinage of France

Drunken Bees

Selected Formulæ

Electrical Notes

Engineering Notes

Miscellaneous Notes

On Charging Open Hearth Furnaces by Machinery

By Jeremiah Head

Coffee Growing in India

By F. A. Symons


Raising Goldfish


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