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��ropiiJar Science Monihly
���Before the war, only two or three machines in an endurance contest, in which perhaps twenty aeroplanes were entered, reached their dcstin.ition. But now we hear ot flocks of fifteen flying from Calais to K.irlsriilie on a lionib-droppinR expedition and returning safely. Surely the war has taught ui much about flying macliinc construction
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