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Features

The Jeannette Expedition

Trial Trip of the New Steamer Queen of the Pacific

Improved Gas Making Apparatus

The Ventilation of the St. Louis Tunnel

Electric Lighting Applied to Navigation

The “Pilsen” Electric Light Arc Lamp

By Henry F. Joel

Herz's Telephone Trumpet

Silico Copper Wire

Lightning.—Look out for It

Coating Paper with Photographic Preparations

Photo Jottings

By J. Waterhouse

A New Method of Preparing Iodide and Bromide Emulsion

The Late M. Poitevin

An Examination of the Various Methods of Determining Tannic Acid

By Nelson H. Darton

Earth Metals Contained in Samarskite

By H. E. Roscoe

Peroxide of Hydrogen

By P. Ebell

On the Electrolysis of Sulphate of Copper

Tripolith and Artificial Sandstone

The Chemical Action of Light

By J. M. Eder

Digestibility of Coffee and Sugar

The Relation of Food to Muscular Work

By W. B. Carpenter

Travels of Plants

Telopea Speciosissima

Friedrich Mohr's Theory of the Formation of Coal from Marine Algæ

Vines

By J. T. Stewart

New Zealand Fungus

Prehistoric Knives

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July 01, 1882

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