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Features

Ordnance on the Allied Front—I

Developments in Artillery during the War

By John Headlam

The Treatment of Chemical Subjects by the Daily Press

Migratory Butterflies

A Mysterious Fish with Arabic Inscriptions

Use of Stereoscope for Viewing Contour Maps

Anomalies of the Animal World—Part XI

Flying Frogs and other Curious Batracians

By R. W. Shufeldt

Evaporation from Surfaces of Crystals

Quantitative Micro-Analysis

Danger in Flying through Clouds

Radiation from System of Electrons

Battle Telephones

How Orders and Information are Transmitted at the Front

A Dwarf Elephant Discovered

Early Potatoes

Absorption and Radiation of the Solar Atmosphere

Problems of Atomic Structure—VI

Differences Characteristic of Different Elements, and Mechanism of the Molecule

By J. J. Thomson

Acid-Proof Nickel-Copper-Tungsten-Iron Alloys

Colloids and Chemical Industry

Spontaneous Ignition of Haystacks

Occultation of a Star by Saturn's Rings

Testing Screw Threads

Submersible Cargo Vessels

The Coral-Reef Problem

And the Evidence of the Funafuti Borings

By Ernest W. Skeats

Sleeping Sickness and Big Game

The Track of a Particle from Radium

Cadmium for Rustproofing

Hydrogen Reactions and Catalysts

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    June 15, 1918

    Think Outside the Gift Box