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Pioneers of the Army

A Survey of the History of Military Engineering and Modern Requirements

By Th. Wolff

Manjack Deposits in the West Indies

Steel and Civilization

Prizes for Scientists

The Scissors Periscope

Devices for Making Observations from a Safe Cover

The First Spanish Submarine

The use of Balloons during the Siege of Paris, 1870-1

Natural History of the Whale Shark—I

Facts About a Monster Fish That is Little Known

By E. W. Gudger

Kiel, the Great German Naval Base

Its Naval and Engineering Features

By A. Wharton Metcalfe

Micro-Organisms and the War

Rare Gases in Natural Gas

The Medical Reserve Corps United States Army

An Important Service that has been Neglected

Signaling on Railway Trains in Motion—II

Various Systems of Engine Cab Systems Used in France

Some Factors in Municipal Engineering

The Role of Engineer in the Development of Municipalities

By Morris Llewellyn Cooke

The Coal-Tar Chemical Industry in Germany and America


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