Page:Popular Science Monthly Volume 88.djvu/551

 Necessity is the Mother of Invention

����Even the copper weights on German clocks have

been fired at the Allied troops! Stones have been

substituted for the old copper weights

��Another example of Germany's inventive genius turned to warlike purposes. The photo- graph shows the portable searchlight. This projector, small as it is, is remarkably powerful, and may be assembled for action in an exceedingly small space of time

�� �