Features
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
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
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
