“The aeroplane. . . is not capable of unlimited magnification. It is not likely that it will ever carry more than five or seven passengers. High speed monoplanes will carry even less. . . . Over cities, the aerial sentry or policeman will be found. A thousand aeroplanes flying to the opera must be kept in line and each allowed to alight upon the roof of the auditorium, in its proper turn.” TurnsFoundLinesCitiesFiveThousandCapableSevenSpeedFlyingAviationOperaRoofPredictionsUnlimitedPolicemenPassengersAeroplanesHigh SpeedAuditoriumsMagnification Author:Waldemar Kaempffert