Flags 40 by 50 Metres Necessary for Safety Regarding frequent accusations of deliberate bombings of third-party properties by the Japanese air force, spokesman at yesterday's press conference stated that investigations had been made as to the visibility of flags of the size usually painted on roofs.
"It is an established fact," the spokesman added, "that the minimum width of any visible object is provided that the object is not moving. Consequently if this fact is extended to actual practice a flag which would be visible from an altitude of 4,000 metres would have to be 50 metres long and 40 metres wide and then it would only be visible if the "plane stopped in mid-air."
"Is. not a height of 4000 metres excessive for successful bombing operations?" asked a correspondent, "Not necessarily", the spokesman replied, Tientsin Notes Not
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