Torque in Aeroplane Propellers
Theory and Practical Determination
Features
The Purity of Natural Waters—I
The Influence of Aquatic Organisms, of Domestic Sewage and of Industrial Waste
Spitzberǵen, Its Past and Future
Winter Sports for the Modern Summer Tourist
An Automatic Thunder Storm Recorder
The Electric Wave Detector in Service of Meteorology by the Paris Correspondent of the Scientific American Supplement
The Cost of Industrial Electric Power
The Relative Advantages of Group and Individual Motor Drive
A Scientific Study of Seasickness
And the Logical Remedy
Fountain Pen Manufacture
Making the Iridium-tipped Gold Pen Points
Phosphoric Acid and the Quality of French Wines
The Problem of the Railway Rail
Fuel Consumption and the Climate of Cities
A Study of the Effect of Fuel Consumption in New York City upon Temperature and Rainfall
The Junkers Enǵine
A High-Power Oil Motor by the Berlin Correspondent of the Scientific American
