The three men walked across the Horse Guards Quadrangle towards Downing Street. The only words uttered were when Sir Lyster asked John Dene if he had seen the pelicans. John Dene looked at him in amazement. He had heard that in British official circles it was considered bad taste to discuss the war except officially, and he decided that he was now discovering what was really the matter with the British Empire. As the trio crossed the road to mount the steps leading to Downing Street, the girl passed of whom John Dene had asked the way. Her eyes widened slightly as she recognised John Dene's two companions; they widened still more when John Dene lifted his hat, followed a second later by Sir Lyster, whilst Admiral Heyworth saluted. In her surprise she nearly ran into a little shifty-eyed man, in a grey suit, who, with an elaborate flourish of his hat, hastened to apologise for her carelessness. "That's the girl who showed me the way to your back-door," John Dene announced nonchalantly. Sir Lyster exchanged a rapid glance with the Admiral. "If I was running this show," continued John Dene, "I'd get that door enlarged a bit and splash some paint about;" and for the first time since they had met John Dene smiled up at Sir Lyster, a smile that entirely changed the sombre cast of his features. On arriving at no, Downing Street, the three callers were conducted straight into Mr. Llewellyn John's room. As they entered, he rose quickly from his table littered with papers, and with a smile greeted his colleagues. Sir Lyster then introduced John Dene. Mr. Llewellyn John grasped John Dene's hand, and turned on him that bewilderingly sunny smile which Mr. Chappeldale had once said ought in itself to win the war. "Sit down, Mr. Dene," said Mr. Llewellyn John, indicating a chair; "it's always a pleasure to meet any one from Canada. What should we have done without you Canadians?" he murmured half to himself. "Mr. Dene tells us that he has solved the submarine problem," said Sir Lyster, as he and Admiral Heyworth seated themselves. Instantly Mr. Llewellyn John became alert. The social smile vanished from his features, giving place to the look of a keen-witted Celt, eager to pounce upon something that would further his schemes. He turned to John Dene interrogatingly. "Perhaps Mr. Dene will explain," suggested Sir Lyster. "Sure," said John Dene, "your submarine isn't a submarine at all, it's a submersible. Under water it's useless, because it can't see. As well call a seal a fish. A submarine must be able to fight under water, and until it can it won't be any more a submarine than I'm a tunny fish." Mr. Llewellyn John nodded in eager acquiescence. "I've spent over a million dollars, and now I've got a boat that can see under water and fight under water and do a lot of other fancy tricks." Mr. Llewellyn John sprang to his feet. "You have. Tell me, where is it? This is wonderful, wonderful! It takes us a year forward."