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The Thorny Croft Torpedo Vessels

By Donaldson

Improved Spar Torpedo

Lighting Street Lamps by Electricity

M. Jablochkoff's Electric Candle

Spectrum Analysis

By Redwood

Movable Dams

Notes on the Treatment of Sewage at Manchester, Salford, and Birmingham

By P. Le Neve Foster

Engines of the Steamer Loudoun Castle

Hydraulic Tools

Hints to Young Machine-Tenders

An Old Paper-Maker

The Gates Carpet Power-Loom

Cutting Out Keyways

By Joshua Rose

Phosphor-Bronze and its Applications

By Alexander Dick

Central Elevator B, St. Louis, Mo

Oxidation of Silver and Platinum

By William Skey

Cleaning Iron-Amalgam

On the Action of Sea Water upon Lead and Copper

By William H. Watson

Determination of Ammonia by Hypo-Bromite of Sodium

By E. Francis

Carbon—Hydrogen—Oxygen

Treating Spent Oxide of Iron to Obtain Sulphur and Prussian Blue

The Chemistry of the Potato

Akademie Der Wissenschaften, Vienna

Deutsche Chemische Gesellschaft, Berlin

Chemical Society, London

By Gladstone

Russian Chemical Society

The Alkaline and Boracic Lakes of California

By J. Arthur Phillips

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