"True," nodded the fleet commander. "What then?"

"Why, sir, by the use of the cleverest kind of lying that spies can do, Gortchky and his associates have hoodwinked the French and Italian governments into believing that the batteries are to be lawfully used for research purposes, when, as a matter of fact, they are to be used aboard a submarine which the plotters intend to use for destroying a British battleship."

"We will admit, then," said Admiral Timworth, as a poser, "that the plotters have probably gotten into Italy storage batteries that can be used serviceably on a submarine. But where and how can the plotters have obtained the submarine craft itself? Or, if they haven't got it yet, how are they to obtain one? For submarines are not sold in open market, and it would be difficult to steal one."

"I cannot answer that, as yet, sir," Dave admitted gravely.

"And such storage batteries might be used for purposes of scientific research," continued the fleet commander.

"Yes, sir; but the habits of the buyers should be considered, should they not? Gortchky and his associates can be hardly believed to be interested in science. On the other hand, they are arch plotters, which would lead us to suppose that they have bought these batteries to further a plot. Outside of scientific work the batteries would not be likely to be used anywhere except on board a submarine. Storage batteries of different size and pattern are used for industrial purposes, but those described in this bill are used on board submarines."

"Your reasoning is plausible, Darrin, and probably correct, too," nodded Admiral Timworth.

"Besides which, sir," Dave pressed home, "if we admit that the plotters have conspired to sink a British battleship at Malta, the easiest way in war-time, when unidentified strangers cannot get aboard a warship, would be to effect the sinking by means of a submarine's torpedo. And, if this be the plan of the plotters, then the crime is likely to be attempted only when there are British and American war craft, and none others, in the Grand Harbor of Malta."

"Yet surely the plotters must know that, between good friends like Britain and America, it would take more than the mere sinking of a British ship to make the English suspect us, as a nation, of being involved in such a dastardly plot."

"Our country couldn't be suspected, as a government or a nation, of being guilty of such a wicked deed," Dave answered. "But Englishman and Frenchmen might very easily believe that the torpedoing was the work of a group of officers and men in our Navy who hated England enough to strike her below the belt. With the British ship sunk, sir, and with none to suspect but the Americans, there is no telling to what heights British passion might rise. The British are feeling the tension of the great war severely, sir."