With the new factor of air power, that argument would
appear to be no longer valid. Yet we are not so sure--witness France's determination to fortify her Eastern frontier according to the best traditions of Vauban, for the sake of a sense of security, although such defences would be of little use in a future war. The French are reported to be enthusiastic at the revival of the' Tunnel idea ; they -believe that as long as the hypothesis of war holds, the tunnel would not simply strike a blow at our independenee, but would, iri fact, deliver Ili biaind hand and foet to French policy. Political considerations apart, the case for a tunnel is as good as ever, the more so as it would employ' Much- labour, but instinct - prejudice some will call it—has a way of disregarding the most • conipelling arguments. ' "