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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

Electrical Notes

Selected Formulæ

Miscellaneous Notes

Colonial Imports

The Explosion of a Powder Magazine at Toulon, France

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

Contractors' Electric Locomotives

Jews in Palestine

The Preparation and some of the Properties of Pure Argon

By William Ramsay and Morris W. Travers

A Cinematograph Camera without Vibrations

Calabrian Bergamot

The Production of Artificial Pearls from the Haliotis

Bacteria and their Uses

The Mont Blanc Meteorological Observatory

Elliott's Recording Voltmeter



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    April 08, 1899

    20% Sitewide for President's Day