As they had gathered to hear Ralph Slade's tale, so now the depleted mess of the _Wolverine_ grouped themselves for Percy Darrow's sequel. Slade himself sat directly across from the doctor's assistant. Before him lay a paper covered with jotted notes. Trendon slouched low in the chair on Slade's right. Captain Parkinson had the other side. Convenient to Darrow's hand lay the material for cigarettes. As he talked he rolled cylinder after cylinder, and between sentences consumed them in long, satisfying puffs.

"First you will want to learn of the fate of your friends and shipmates," he began. "They are dead. One of them, Mr. Edwards, fell to my hands to bury, as you know. He lies beside Handy Solomon. The others we shall probably not see: any one of a score of ocean currents may have swept them far away. The last great glow that you saw was the signal of their destruction. So the work of a great scientist, a potent benefactor of the race, a gentle and kindly old heart, has brought about the death of your friends and of my enemies. The innocent and the guilty ... the murderer with his plunder, the officer following his duty ... one and the same end ... a paltry thing our vaunted science is in the face of such tangled fates." He spoke low and bitterly. Then he squared his shoulders and his manner became businesslike.

"Interrupt me when any point needs clearing up," he said. "It's a blind trail at best. You've the right to see it as plain as I can make it--with Slade's help. Cut right in with your questions: There'll be plenty to answer and some never will be answered....

"Now let me get this thing laid out clearly in my own mind. You first saw the glow--let me see--"

"Night of June 2d," said Barnett.

"June 2d," agreed Darrow. "That was the end of Solomon, Thrackles & Co. A very surprising end to them, if they had time to think," he added grimly.

"Surprising enough, from the survivor's viewpoint," said Slade.

"Doubtless. They've had that story from you; I needn't go over it. This ship picked up the _Laughing Lass_, deserted, and put your first crew aboard. That night, was it not, you saw the second pillar of fire?"

Barnett nodded.

"So your men met their death. Then came the second finding of the empty schooner.... Captain Parkinson, they must have been brave men who faced the unknown terrors of that prodigy."

"They volunteered, sir," said the Captain, with simple pride.

Darrow bowed with a suggestion of reverence in the slow movement of his head. "And that night--or was it two nights later?--you saw the last appearance of the portent. Well, I shall come to that.... Slade has told you how they lived on the beach. With us in the valley it was different. Almost from the first I was alone. The doctor ceased to be a companion. He ceased to be human, almost. A machine, that's what he was. His one human instinct was--well, distrust. His whole force of being was centred on his discovery. It was to make him the foremost scientist of the world; the foremost individual entity of his time--of all time, possibly. Even to outline it to you would take too much time. Light, heat, motive power in incredible degrees and under such control as has never been known: these were to be the agencies at his call. The push of a button, the turn of a screw--oh, he was to be master of such power as no monarch ever wielded! Riches--pshaw! Riches were the least of it. He could create them, practically. But they would be superfluous. Power: unlimited, absolute power was his goal. With his end achieved he could establish an autocracy, a dynasty of science: whatever he chose. Oh, it was a rich-hued, golden, glowing dream; a dream such as men's souls don't formulate in these stale days--not our kind of men. The Teutonic mysticism--you understand. And it was all true. Oh, quite."

"Do you mean us to understand that he had this power you describe?" asked Captain Parkinson.

"In his grasp. Then comes a practical gentleman with a steel hook. A follower of dreams, too, in his way. Conflicting interests--you know how it is. One well-aimed blow from the more practical dreamer, and the greater vision passes.... I'm getting ahead of myself. Just a moment."

His cigarette glowed fiercely in the dimness before he took up his tale again.

"You all know who Dr. Schermerhorn was. None of you know--I don't know myself, though I've been his factotum for ten years--along how many varied lines of activity that mind played. One of them was the secret of energy: concentrated, resistless energy. Man's contrivances were too puny for him. The most powerful engines he regarded as toys. For a time high explosives claimed his attention. He wanted to harness them. Once he got to the point of practical experiment. You can see the ruins yet: a hole in southern New Jersey. Nobody ever understood how he escaped. But there he was on his feet across a ten-foot fence in a ploughed field--yes, he flew the fence-- and running, running furiously in the opposite direction, when the dust cleared away. Someone stopped him finally. Told him the danger was over. 'Yet, I will not return,' he said firmly, and fainted away. That disgusted him with high explosives. What secrets he discovered he gave to the government. They were not without value, I believe."

"They were not, indeed," corroborated Barnett.

"Next his interest turned to the natural phenomena of high energy. He studied lightning in an open steel network laboratory, with few results save a succession of rheumatic attacks, and an improved electric interrupter, since adopted by one of the great telegraph companies. The former obliged him to stop these experiments, and the invention he considered trivial. Probably the great problem of getting at the secret of energy led him into his attempts to study the mysterious electrical waves radiated by lightning flashes; at any rate he was soon as deep into the subject of electrical science as his countryman, Hertz, had ever been. He used to tell me that he often wondered why he hadn't taken up this line before--the world of energy he now set out to explore, waves in that tremendous range between those we hear and those we see. It was natural that he should then come to the most prominent radio-active elements, uranium, thorium, and radium. But though his knowledge surpassed that of the much-exploited authorities, he was never satisfied with any of his results.

"'Pitchblende; no!' he would exclaim. 'It has not the great power. The mines are not deep enough, yet!'

"Then suddenly the great idea that was to bring him success, and cost him his life, came to him. The bowels of the earth must hold the secret! He took up volcanoes.... Does all this sou............