Geographic Aspects of the War—I
How Topographical Conditions Affect Military Operations
Volume 80, Issue 2073supp
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Features
Some Rare Amphibians
Valuable New Specimens at the New York Zoological Park
When to Clean Turbine Blades
How a Top Stands Up
A Simple Explanation of a Frequently Recurring Phenomenon
Nickel-Plating on Aluminium
Isostasy and Mountain Building
How the Depressions and Eminences Upon the Earth's Surface Were Formed
Drilling for Oil
Improved Engineering Methods
Imitation Precious Stones
Photographic Maps
Methods of Producing Correct Charts with the Camera
Magnetization by Rotation
Control and Protection of Electric Systems
Problems that Have Arisen with Increase of Power and Extension of Circuits
The Synthetic Production of Nitric Acid
The Manufacture of Liquid Air
Methods Employed and the Development of Machinery Now Used
The Movements of the Moon
Mental Tests of Dementia
A Consideration of Various Doctrines and Results of Some Investigations