Page:Popular Science Monthly Volume 88.djvu/547

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��In the lower right-hand cor- ner of the picture on the left, IS shown a French tunnel which leads to a mine under the German position. The wires which will blow up the mine may be seen coming from the mouth of the tunnel

��The destruction of a pontoon bridge on the Isonzo River. As is customary in modern warfare, all means of retreat and advance are destroyed when- ever possible by the enemy. The illustration is a striking picture of the actual mining of a pon- toon bridge which crossed the Isonzo

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