Popular science monthly . An Austrian pilot balloon being inflated from a gas cylinder. These small pilot balloonsarc Fcnt aloft just before a Zeppelin foray in order to determine the direction and velocityof the air currents. In time of peace they are employed to obtain temperature read-ings of the upper air for the use of meteorologists 42 Rapid-Fire Guns r - Their Victim A new Britishmachine -gunequipped forcavalry gun isextremely light,and may beeasily carriedon the back ofone horse. Inan emergency itmay be assem-bled for actionin a very fewminutes At right, the first ofthe famous
Popular science monthly . An Austrian pilot balloon being inflated from a gas cylinder. These small pilot balloonsarc Fcnt aloft just before a Zeppelin foray in order to determine the direction and velocityof the air currents. In time of peace they are employed to obtain temperature read-ings of the upper air for the use of meteorologists 42 Rapid-Fire Guns r - Their Victim A new Britishmachine -gunequipped forcavalry gun isextremely light,and may beeasily carriedon the back ofone horse. Inan emergency itmay be assem-bled for actionin a very fewminutes At right, the first ofthe famous Fokkermonoplanes to fall intothe French lines. Theselight and speedymachines played liavocwith the Allied airforces. They are littledifferent from thefamiliar French Mor-ane except that theyare overpowered, thusgaining great cpeed Below, the warning cryA Taube sendingthe men of the anti-aircraft automobilecrews sprinting to theircars. The motor-carsare equipped with high-angle rapid-fire guns.
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Keywords: ., bookcentury1800, bookdecade1870, booksubjectscience, bookyear1872
