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Features

Electrical Meter Testing in Germany

Water for an Army

Successful Hygienic Work of Great Importance

Rubber-Seed Oil

German Commercial Trickery

Wonderful Exhibition of Old French Silks

Glories of Color Revealed in Ancient Fabrics, Product of the Lost Art of Exiled Huguenots

Growth in Grey Cast Iron

Atlantic Flight

A Matter of Mathematical Analysis

By M. A. S. Riach

Plant Growth and Reproduction

Intensive Prune Cultivation under way in France

The Raleigh Tercentenary

Non-Inflammable Plastic Material

The Macoa indians of Venezuela—III

An Expedition Among a Little Known but Ancient Race

By Theodoor De Booy

Some Peculiar Thermoelectric Effects

By Paul D. Foote and T. R. Harrison

The Marbles of Italy

The 34 Supermagic Square

Mathematical Recreations of Ancient Origin

By F. J. Anderson

Molecular Orientations in Physics and in Crystallography—II

A New Hypothesis in the Investigation of Matter

By Albert Perrier

Behavior of Animals during Explosions

Linen Plant Tags

Spectroscopy and Dissociation

Sphagnum Moss

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    January 18, 1919

    Think Outside the Gift Box