A 'special Sphere diagram' combining a photograph of bomb damage on a building in Antwerp with an added illustration of the bomb, dropped from a German Zeppelin, exploding on impact with the ground. The fragments fly upwards and greater damage is done to the upper level of the building than the ground floor fa?ade. Citizens of Liege were advised to throw themselves to the ground when they heard bombs approaching, thus supposedly reducing the risk of injury from the bomb shrapnel.