"The sequel will show," returned Holmes.

"Oh, Lord!" put in Raleigh. "Can't we put off the sequel until a later issue? Remember, Mr. Holmes, that we are constantly losing time."

"The sequel is brief, and I can narrate it on our way to the office of the Navigation Company," observed the detective. "When the bottle came I invited Mr. Burgess to join us, which he did, and as the hour was late when we came to separate, I offered him the use of my parlor overnight.

This he accepted, and we retired.

"The next morning when I arose to dress, the mystery was cleared."

"You had dreamed its solution?" asked Raleigh.

"No," replied Holmes. "Burgess had disappeared with all my clothing, my false-beard, my suit-case, and my watch. The only thing he had left me was the bathing-suit and a few empty small bottles."

"And why, may I ask," put in Hamlet, as they drew near to Charon's office--"why does that case remind you of business as it is conducted to-day?"

"In this, that it is a good thing to stay out of unless you know it all,"

explained Holmes. "I omitted in the case of Burgess to observe one thing about him. Had I observed that his nose was rectilinear, incurved, and with a lifted base, and that his auricular temporal angle was between 96 and 97 degrees, I should have known at once that he was an impostor.

_Vide_ Ottolenghui on 'Ears and Noses I Have Met,' pp. 631-640."

"Do you mean to say that you can tell a criminal by his ears?" demanded Hamlet.

"If he has any--yes; but I did not know that at the time of the Brighton mystery. Therefore I should have stayed out of the case. But here we are.

Good-morning, Charon."

By this time the trio had entered the private office of the president of the Styx Navigation Company, and in a few moments the vessel was chartered at a fabulous price.

On the return to the wharf, Sir Walter somewhat nervously asked Holmes if he thought the plan they had settled upon would work.

"Charon is a very shrewd old fellow," said he. "He may outwit us yet."

"The chances are just two and one-eighth degrees in your favor," observed Holmes, quietly, with a glance at Raleigh's ears. "The temporal angle of your ears is 93-1/8 degrees, whereas Charon's stand out at 91, by my otometer. To that extent your criminal instincts are superior to his. If criminology is an exact science, reasoning by your respective ears, you ought to beat him out by a perceptible though possibly narrow margin."

With which a.s.surance Raleigh went ahead with his preparations, and within twelve hours the _Gehenna_ was under way, carrying a full complement of crew and officers, with every state-room on board occupied by some spirit of the more ill.u.s.trious kind.

Even Shylock was on board, though no one knew it, for in the dead of night he had stolen quietly up the gang-plank and had hidden himself in an empty water-cask in the forecastle.

[Ill.u.s.tration: "IN THE DEAD OF NIGHT SHYLOCK HAD STOLEN UP THE GANG-PLANK"]

"'Tisn't Venice," he said, as he sat down and breathed heavily through the bung of the barrel, "but it's musty and damp enough, and, considering the cost, I can't complain. You can't get something for nothing, even in Hades."

VIII

ON BOARD THE "GEHENNA"

When the _Gehenna_ had pa.s.sed down the Styx and out through the beautiful Cimmerian Harbor into the broad waters of the ocean, and everything was comparatively safe for a while at least, Sherlock Holmes came down from the bridge, where he had taken his place as the commander of the expedition at the moment of departure. His brow was furrowed with anxiety, and through his ma.s.sive forehead his brain could be seen to be throbbing violently, and the corrugations of his gray matter were not pleasant to witness as he tried vainly to squeeze an idea out of them.

"What is the matter?" asked Demosthenes, anxiously. "We are not in any danger, are we?"

"No," replied Holmes. "But I am somewhat puzzled at the bubbles on the surface of the ocean, and the ripples which we pa.s.sed over an hour or two ago, barely perceptible through the most powerful microscope, indicate to my mind that for some reason at present unknown to me the House-boat has changed her course. Take that bubble floating by. It is the last expiring bit of aerial agitation of the House-boat's wake. Observe whence it comes.

Not from the Azores quarter, but as if instead of steering a straight course thither the House-boat had taken a sharp turn to the northeast, and was making for Havre; or, in other words, Paris instead of London seems to have become their destination."

Demosthenes looked at Holmes with blank amazement, and, to keep from stammering out the exclamation of wonder that rose to his lips, he opened his _bonbonniere_ and swallowed a pebble.

"You don't happen to have a cocaine tablet in your box, do you?" queried Holmes.

"No," returned the Greek. "Cocaine makes me flighty and nervous, but these pebbles sort of ballast me and hold me down. How on earth do you know that that bubble comes from the wake of the House-boat?"

"By my chemical knowledge, merely," replied Holmes. "A merely worldly vessel leaves a phosph.o.r.escent bubble in its wake. That one we have just discovered is not so, but sulphurescent, if I may coin a word which it seems to me the English language is very much in need of. It proves, then, that the bubble is a portion of the wake of a Stygian craft, and the only Stygian craft that has cleared the Cimmerian Harbor for years is the House-boat--Q.E.D."

"We can go back until we find the ripple again, and follow that, I presume," sneered Le Coq, who did not take much stock in the theories of his great rival, largely because he was a detective by intuition rather than by study of the science.

"You can if you want to, but it is better not to," rejoined Holmes, simply, as though not observing the sneer, "because the ripple represents the outer lines of the angle of disturbance in the water; and as any one of the sides to an angle is greater than the perpendicular from the hypothenuse to the apex, you'd merely be going the long way. This is especially important when you consider the formation of the bow of the House-boat, which is rounded like the stern of most vessels, and comes near to making a pair of ripples at an angle of ninety degrees."

"Then," observed Sir Walter, with a sigh of disappointment, "we must change our course and sail for Paris?"

"I am afraid so," said Holmes; "but of course it's by no means certain as yet. I think if Columbus would go up into the mizzentop and look about him, he might discover something either in confirmation or refutation of the theory."

"He couldn't discover anything," put in Pinzon. "He never did."

"Well, I like that!" retorted Columbus. "I'd like to know who discovered America."

"So should I," observed Leif Ericson, with a wink at Vespucci.

"Tut!" retorted Columbus. "I did it, and the world knows it, whether you claim it or not."

"Yes, just as Noah discovered Ararat," replied Pinzon. "You sat upon the deck until we ran plumb into an island, after floating about for three months, and then you couldn't tell it from a continent, even when you had it right before your eyes. Noah might just as well have told his family that he discovered a roof garden as for you to go back to Spain telling 'em all that San Salvador was the United States."

"Well, I don't care," said Columbus, with a short laugh. "I'm the one they celebrate, so what's the odds? I'd rather stay down here in the smoking-room enjoying a small game, anyhow, than climb up that mast and strain my eyes for ten or a dozen hours looking for evidence to prove or disprove the correctness of another man's theory. I wouldn't know evidence when I saw it, anyhow. Send Judge Blackstone."

"I draw the line at the mizzentop," observed Blackstone. "The dignity of the bench must and shall be preserved, and I'll never consent to climb up that rigging, getting pitch and paint on my ermine, no matter who asks me to go."

[Ill.u.s.tration: JUDGE BLACKSTONE REFUSES TO CLIMB TO THE MIZZENTOP]

"Whomsoever I tell to go, shall go," put in Holmes, firmly. "I am commander of this ship. It will pay you to remember that, Judge Blackstone."

"And I am the Court of Appeals," retorted Blackstone, hotly. "Bear that in mind, captain, when you try to send me up. I'll issue a writ of _habeas corpus_ on my own body, and commit you for contempt."

"There's no use of sending the Judge, anyhow," said Raleigh, fearing by the glitter that came into the eye of the commander that trouble might ensue unless pacificatory measures were resorted to. "He's accustomed to weighing everything carefully, and cannot be rushed into a decision. If he saw any evidence, he'd have to sit on it a week before reaching a conclusion. What we need here more than anything else is an expert seaman, a lookout, and I nominate Shem. He has sailed under his father, and I have it on good authority that he is a nautical expert."

Holmes hesitated for an instant. He was considering the necessity of disciplining the recalcitrant Blackstone, but he finally yielded.

"Very well," he said. "Shem be it. Bo'sun, pipe Shem on deck, and tell him that general order number one requires him to report at the mizzentop right away, and that immediately he sees anything he shall come below and make it known to me. As for the rest of us, having a very considerable appet.i.te, I do now decree that it is dinner-time. Shall we go below?"

[Ill.u.s.tration: SHEM IN THE LOOKOUT]

"I don't think I care for any, thank you," said Raleigh. "Fact is--ah--I dined last week, and am not hungry."