23 FEBRUARY 1940, Page 6

The scale of air-warfare up-to-date, and the potentialities of air-warfare

in the future, will be put in their right propor- tions if it is realised that in all the fighting—North Sea, Heligoland Bight, Western Front—neither side has, in close on five months of war, lost in machines the equivalent of anything like a week's, or half a week's, production.