pea-green lights could not but become a symbol of the conquest of the air; and the patriotic statesman, deeply considering what sort of battleship might best defend his country's coasts, was insensibly and subtly influenced by the number of times that he had seen its name repeated on the steps of a moving staircase at an Imperial Exhibition. Nor could there be any doubt about the brilliant success that attended these scientific specialities so long as their operations were confined to the market. The methods of Commander Blair were in comparison private, local, obscure and lacking any general recognition; and by a strange irony it was a positive advantage to this nameless and secretive crank that he had never advertised his weapons until he used them. He had paraded a number of merely fanciful balloons and fireworks for a jest; but the secrets to which he attached importance he had hidden in cracks of the Welsh mountains with a curious and callous indifference to the principles of commercial distribution and display. He could not in any case have conducted operations on a large scale, being deficient in that capital, the lack of which has so often been fatal to inventors; and had made it useless for a man to discover a machine unless he could also discover a millionaire. But