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Solvay's Distilling Apparatus for the Concentration of Gas Liquor from Gas Works

By G. Th. Gerlach

Boilers of the Havemeyer Sugar Works

Drying Machine for Crystals

The Light of Flames

Pipes for Gas and other Purposes

Continental Railways

On the Mechanical Firing of Steam Boilers

By W. J. Pearse

A Paddle Engine for Light Draught Steamers

Thornycroft's Screw Propeller

Water Works at Bangor, Maine

By L. H. Eaton

On the Minute Measurements of Modern Science

By Alfred M. Mayer

Ball Lightning

Tonometry

New Investigations on the Compound Electroplating Bath

Improvement in Dynamo-Electric Machines

By F. J. Lontin

Structure and Origin of Meteorites

Fifty Syrup Recipes. For Mineral Waters and other Purposes

Deutsche Chemische Gesellschaft, Berlin

Practical Receipts

Preparation of Pure Bismuth

Treating Lubricating Oils

A New Oxygen Retort

By William J. Chadwick

Estimation of Boracic Acid

Synthesis of Urea

Explosion of Nitro-Hydrochloric Acid

On Formation of Saltpetre by Organic Ferments

Density of Alum Solutions

Colognes for the Sick-Room

By George Leis

The Ferments Contained in Plants

By C. Kosmann

A New Ureometer for Clinical Use

Curability of Acute Phthisis

Iron and Steel Manufacture

Neptunium, a New Metal

A New Solvent for Silk

Portraits in Watch Glasses

Inventions and Improvements Announced Abroad

Pittsburgh

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