It was John Dene who broke in upon their thoughts.

"The Huns have got it coming," he remarked grimly.

"But----" began Admiral Heyworth.

"Listen," said John Dene. "I'm an electrical engineer. I'm worth more millions than you've got toes. I saw that under water the submarine is only a blind fish with a sting in its tail. Give it eyes and it becomes a real factor--_under water_." He paused, revolving his cigar in his mouth. His listeners nodded eagerly.

"Well," he continued, "I set to work to give her eyes. On the St.

Lawrence River, just below Quebec, I've got a submarine that can see.

Her search-lights----"

"But how have you done it?" broke in the Admiral.

"That," remarked John Dene drily, "is my funeral."

"We must put this before the Inventions Board," said Sir Lyster. "Let me see, this is Friday. Can you be here on Tuesday, Mr. Dene?"

"No!"

Sir Lyster started at the decision in John Dene's tone.

"Would Wednesday----"

"Look here," broke in John Dene, "I come from T'ronto, and in Can'da when we've got a good thing we freeze on to it. You've got to decide this thing within twenty-four hours, yes or no. Unless I cable to my agent in Washin'ton by noon to-morrow, he'll make the same offer I've made you to the States, and they'll be that eager to say 'Yep,' that they'll swallow their gum."

"But, Mr. Dene----" began Sir Lyster.

"I've been in this country fourteen hours," proceeded John Dene calmly, "and I can see that you all want gingering-up. Why the h.e.l.l can't you decide on a thing at once, when you've got everything before you? If a man offers you a pedigree-pup for nothing, and you want a pedigree-pup, wouldn't you just hold out your hand?"

John Dene looked from one to the other.

"But this is not exactly a matter of a pedigree-pup," suggested Admiral Heyworth diplomatically. "It's a matter of--er----"

"I see you haven't got me," said John Dene with the air of a patient schoolmaster with a stupid pupil. "You," he addressed himself in particular to Sir Lyster, "have said in public that the most difficult spot in connexion with the submarine trouble is between the Shetlands and the Norwegian coast. You can't help the U-boats slipping through submerged. Suppose the _Destroyer_--that's the name of my boat--is sort of hanging around there, _with eyes_ and some other little things she's got, what then?"

"Both Sir Lyster and I appreciate all you say," said the Admiral; "but, well, we are a little old fashioned perhaps in our methods here." He smiled deprecatingly.

"Well," said John Dene, rising, "you lose the odd trick, that's all; and," he added significantly as he took a step towards the door, "when it all comes out, you'll lose your jobs too."

"Really, Mr. Dene," protested Sir Lyster, flushing slightly.

John Dene swung round on his heel. "If you'd spent three years of your life and over a million dollars on a boat, and come three thousand miles to offer it to someone for nothing, and were told to wait till G.o.d knows which day what week, well, you'd be rattled too. In T'ronto we size up a man before he's had time to say he's pleased to meet us, and we'd buy a mountain quicker than you'd ask your neighbour to pa.s.s the marmalade at breakfast."

Whilst John Dene was speaking, Sir Lyster had been revolving the matter swiftly in his mind. He was impressed by his visitor's fearlessness.

A self-made man himself, he admired independence and freedom of speech in others. He was not oblivious to the truth of John Dene's hint of what would happen if another nation, even an allied nation, were to acquire a valuable invention that had been declined by Great Britain.

He remembered the Fokker scandal. He decided to temporise.

"If," continued John Dene, "I was asking for money, I'd understand; but I won't take a red cent, and more than that I go bail to the tune of a quarter of a million dollars that I deliver the goods."

He strode up and down the room, twirling his cigar, and flinging his short, sharp sentences at the two men, who, to his mind, stood as barriers to an Allied triumph.

"If you will sit down, Mr. Dene," said Sir Lyster suavely, "I'll explain."

John Dene hesitated for a moment, then humped himself into a chair, gazing moodily before him.

"We quite appreciate your--er--patriotism and public-spiritedness in----"

"Here, cut it out," broke in John Dene. "Do you want the _Destroyer_ or don't you?"

Sir Lyster recoiled as if he had been struck. He had been First Lord too short a time for the gilt to be worn off his dignity. Seeing his Chief about to reply in a way that he suspected might end the interview, Admiral Heyworth interposed.

"May I suggest that under the circ.u.mstances we consult Mr. Llewellyn John?"

"That's bully," broke in John Dene without giving Sir Lyster a chance of replying. "They say he's got pep."

Bowing to the inevitable, Sir Lyster picked up the telephone-receiver.

"Get me through to the Prime Minister," he said.

The three men waited in silence for the response. As the bell rang, Sir Lyster swiftly raised the receiver to his ear.

"Yes, the Prime Minister. Sir Lyster Grayne speaking." There was a pause. "Grayne speaking, yes. Can I come round with Admiral Heyworth and an--er--inventor? It's very important." He listened for a moment, then added, "Yes, we'll come at once."

"Now, Mr. Dene," said Sir Lyster, as he rose and picked up his hat, "I hope we shall be able to--er----" He did not finish the sentence; but led the way to the door.

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 pa.s.sed 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.