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The Periar Dam

Vitreous Enamels

I.—Early Enamels

By Cyril Davenport

Dirigible Air Vessels

The Movable Platform of Saint Ouen

Boiler Flue Drilling Machine

Roller-Feed Planing Machine

Trade Suggestions from United States Consuls

Miscellaneous Notes

Electrical Notes

Selected Formulæ

The Explosion of a Powder Magazine at Toulon, France

Colonial Imports

Varnishes, Etc., used in Building Structures, by Wood Workers, Etc.

Jews in Palestine

Contractors' Electric Locomotives

The Preparation and some of the Properties of Pure Argon

By William Ramsay and Morris W. Travers

Calabrian Bergamot

A Cinematograph Camera without Vibrations

Bacteria and their Uses

The Production of Artificial Pearls from the Haliotis

The Mont Blanc Meteorological Observatory

Elliott's Recording Voltmeter



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