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Features

Sulphur and the Spontaneous Combustion of Coal

Furnaces for Munitions

Principles of Design

Damascene Steel

Testing a Light Filter

The Dove of War

Winged Dispatch Carriers that are Doing Brave Work at the Front

By Lee S. Crandall

Saccharine Regulations in France

Absorbtion and Phosphorescence

The Moons of Mars

Case-Hardening and Oil-Hardening

The Daikon

The Invasion of the Trenches by Rats—II

Its Causes And Its Remedies

La Guerre Pour le Minerai de Fer

New High-Grade Lubricant

Nature's Submarines

How We Guard Our Commerce Against Them

Crystals in Filament Form as used in Electric Incandescent Lamps

The Men Who Build our Ships

Cider Apple Jelly

By B. T. P. Barker

Method of Staining to Distinguish between Bleached and Unbleached Sulphite Pulps

The Home in India

Substitutes for Glass

Mexican Nettle as a Fiber Plant

Electric Power Diagrams

Annual Load Relief Map, Peak Load and Load Factor Analysis

By Wm. LeRoy Robertson

Substitutes for Coal in Gas Making

New Aluminum Alloy

Instruments for Air Use

The Principal Bridges of the World—I

A Comparison of their Size, Importance and Principles of Design

Ancient Cart-Ruts in Malta

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    November 02, 1918

    Complex Causes. Alternative Solutions.