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Raising the "F-4," Are Obsolete Battleships Obsolete? and more

By J. F. Springer

Dum-dum Bullets

Expanding bullets are forbidden by the laws of war.

By Edward C. Crossman

An Analysis of Our Naval Standing--II

Why We Are An Inferior Power

By George von L. Meyer

Zones of Silence, The Current Supplement

By W. J. L. Kiehl

Teaching Defective Children, Disinfecting Railway Cars

The Remarkable Experiment of Columbia University in Educational Psychology

By A. M. Jungmann

Selenium in the Production of Colored Glass, Back Numbers of the Scientific American Supplement and more

By Samuel Wein

Development and Perfection of Schoop Metal Spray

The Improved American "Pistol"

Measuring One Twenty-Millionth of an Inch

The Finest and Most Sensitive Measuring Instrument Known to Modern Science

By Ernst Keil

The Strangest City in the World

A Town Given Over to the Moving Picture

An Important Moving-picture Decision


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