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Features

Notes on Manila and Cavité

Account of Dr. Peters' Recent Visit to the Ruins in Zambesia

Forest and Mineral Wealth of the Soudan

Precious Stones of New York

The Designing of Automatic Machinery

By Hanson Robinson

An Improved Continuous-Combustion Generator

The “Ideal” Saw-Guard

Trade Suggestions from United States Consuls

Miscellaneous Notes

Selected Formulæ

Trade Notes and Receipts

Natural and Artifiulal Rubber

The Victoria Regia

Archæological Discoveries at Carthage—I

A Century of Spade Work

Our Trade with Germany

Trade with the British West India Islands

Transportation Routes of the Western Hemisphere

The Chemistry of Cold Storage

By S. H. Hurst

A Source of Intense Monochromatic Light

The Manufacture of Carbons

Action of Light on Birds' Feathers

The Waste of Shipping

The Cost of a Train Mile

The Relations of Physics and Astronomy to the Development of the Mechanic Arts

United States Weather Bureau, Washington, D. C. viii. education in science and training in art are mutually helpful

By Cleveland Abbe

A New Glass, and its uses in the Arts

By William Dulles

Patents!

Ivory Preserved in Cold Storage

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    September 16, 1899

    Music's Mysterious Power

    Music's Mysterious Power

    Emotional. Cognitive. Therapeutic.