the depths of the lake; and various explanations have been offered to account for it. At first, it was suggested that the trouble was due to seismic forces, to some volcanic action beneath the lake; but this hypothesis had to be rejected when it was recognized that the disturbance was not confined to one locality, but spread itself over the entire surface of the lake, either at one part or another, in the center or along the edges, traveling along almost in a regular line and in a way to exclude entirely all idea of earthquake or volcanic action. "Another hypothesis suggested that it was a marine monster who thus upheaved the waters. But unless the beast had been born in the lake and had there grown to its gigantic proportions unsuspected, which was scarce possible, he must have come there from outside. Lake Kirdall, however, has no connection with any other waters. If this lake were situated near any of the oceans, there might be subterranean canals; but in the center of America, and at the height of some thousands of feet above sea-level, this is not possible. In short, here is another riddle not easy to solve, and it is much easier to point out the impossibility of false explanations, than to discover the true one. "Is it possible that a submarine boat is being experimented with beneath the lake? Such boats are no longer impossible today. Some years ago, at Bridgeport, Connecticut, there was launched a boat, The Protector, which could go on the water, under the water, and also upon land. Built by an inventor named Lake, supplied with two motors, an electric one of seventy-five horse power, and a gasoline one of two hundred and fifty horse power, it was also provided with wheels a yard in diameter, which enabled it to roll over the roads, as well as swim the seas. "But even then, granting that the turmoil of Lake Kirdall might be produced by a submarine, brought to a high degree of perfection, there remains as before the question how could it have reached Lake Kirdall? The lake, shut in on all sides by a circle of mountains, is no more accessible to a submarine than to a sea-monster. "In whatever way this last puzzling question may be solved, the nature of this strange appearance can no longer be disputed since the twentieth of June. On that day, in the afternoon, the schooner "Markel" while speeding with all sails set, came into violent collision with something just below the water level. There was no shoal nor rock near; for the lake in this part is eighty or ninety feet deep. The schooner with both her bow and her side badly broken, ran great danger of sinking. She managed, however, to reach the shore before her decks were completely submerged. "When the 'Markel' had been pumped out and hauled up on shore, an examination showed that she had received a blow near the bow as if from a powerful ram. "From this it seems evident that there is actually a submarine boat which darts about beneath the surface of Lake Kirdall with most remarkable rapidity. "The thing is difficult to explain. Not only is there a question as to how did the submarine get there? But why is it there? Why does it never come to the surface? What reason has its owner for remaining unknown? Are other disasters to be expected from its reckless course?" The article in the Evening Star closed with this truly striking suggestion: "After the mysterious automobile, came the mysterious boat. Now comes the mysterious submarine. "Must we conclude that the three engines are due to the genius of the same inventor, and that the three vehicles are in truth but one?" Chapter 8 AT ANY COST The suggestion of the Star came like a revelation. It was accepted everywhere. Not only were these three vehicles the work of the same inventor; they were the same machine! It was not easy to see how the remarkable transformation could be practically accomplished from one means of locomotion to the other. How could an automobile become a boat, and yet more, a submarine? All the machine seemed to lack was the power of flying through the air. Nevertheless, everything that was known of the three different machines, as to their size, their shape, their lack of odor or of steam, and above all their remarkable speed, seemed to imply their identity. The public, grown blase with so many excitements, found in this new marvel a stimulus to reawaken their curiosity. The newspapers dwelt now chiefly on the importance of the invention. This new engine, whether in one vehicle or three, had given proofs of its power. What amazing proofs! The invention must be bought at any price. The United States government must purchase it at once for the use of the nation. Assuredly, the great European powers would stop at nothing to be beforehand with America, and gain possession of an engine so invaluable for military and naval use. What incalculable advantages would it give to any nation, both on land and sea! Its destructive powers could not even be estimated, until its qualities and limitations were better known. No amount of money would be too great to pay for the secret; America could not put her millions to better use. But to buy the machine, it was necessary to find the inventor; and there seemed the chief difficulty. In vain was Lake Kirdall searched from end to end. Even its depths were explored with a sounding-line without result. Must it be concluded that the submarine no longer lurked beneath its waters? But in that case, how had the boat gotten away? For that matter, how had it come? An insoluble problem! The submarine was heard from no more, neither in Lake Kirdall nor elsewhere. It had disappeared like the automobile from the roads, and like the boat from the shores of America. Several times in my interviews with Mr. Ward, we discussed this matter, which still filled his mind. Our men continued everywhere on the lookout, but as unsuccessfully as other agents. On the morning of the twenty-seventh of June, I was summoned into the presence of Mr. Ward. "Well, Strock," said he, "here is a splendid chance for you to get your revenge." "Revenge for the Great Eyrie disappointment?" "Of course." "What chance?" asked I, not knowing if he spoke seriously, or in jest. "Why, here," he answered. "Would not you like to discover the inventor of this three-fold machine?" "I certainly should, Mr. Ward. Give me the order to take charge of the matter, and I will accomplish the impossible, in order to succeed. It is true, I believe it will be difficult." "Undoubtedly, Strock. Perhaps even more difficult than to penetrate into the Great Eyrie." It was evident that Mr. Ward was intent on rallying me about my unsuccess. He would not do that, I felt assured, out of mere unkindness. Perhaps then he meant to rouse my resolution. He knew me well; and realized that I would have given anything in the world to recoup my defeat. I waited quietly for new instructions. Mr. Ward dropped his jesting and said to me very generously, "I know, Strock, that you accomplished everything that depended on human powers; and that no blame attaches to you. But we face now a matter very different from that of the Great Eyrie. The day the government decides to force that secret, everything is ready. We have only to spend some thousands of dollars, and the road will be open." "That is what I would urge." "But at present," said Mr. Ward, shaking his head, "it is much more important to place our hands on this fantastic inventor, who so constantly escapes us. That is work for a detective, indeed; a master detective!" "He has not been heard from again?" "No; and though there is every reason to believe that he has been, and still continues, beneath the waters of Lake Kirdall, it has been impossible to find any trace of him anywhere around there. One would almost fancy he had the power of making himself invisible, this Proteus of a mechanic!" "It seems likely," said I, "that he will never be seen until he wishes to be." "True, Strock. And to my mind there is only one way of dealing with him, and that is to offer him such an enormous price that he cannot refuse to sell his invention." Mr. Ward was right. Indeed, the government had already made the effort to secure speech with this hero of the day, than whom surely no human being has ever better merited the title. The press had widely spread the news, and this extraordinary individual must assuredly know what the government desired of him, and how completely he could name the terms he wished. "Surely," added Mr. Ward, "this invention can be of no personal use to the man, that he should hide it from the rest of us. There is every reason why he should sell it. Can this unknown be already some dangerous criminal who, thanks to his machine, hopes to defy all pursuit?" My chief then went on to explain that it had been decided to employ other means in search of the inventor. It was possible after all that he had perished with his machine in some dangerous maneuver. If so, the ruined vehicle might prove almost as valuable and instructive to the mechanical world as the man himself. But since the accident to the schooner "Markel" on Lake Kirdall, no news of him whatever had reached the police. On this point Mr. Ward did not attempt to hide his disappointment and his anxiety. Anxiety, yes, for it was manifestly becoming more and more difficult for him to fulfill his duty of protecting the public. How could we arrest criminals, if they could flee from justice at such speed over both land and sea? How could we pursue them under the oceans? And when dirigible balloons should also have reached their full perfection, we would even have to chase men through the air! I asked myself if my colleagues and I would not find ourselves some day reduced to utter helplessness? If police officials, become a useless incumbrance, would be definitely discarded by society? Here, there recurred to me the jesting letter I had received a fortnight before, the letter which threatened my liberty and even my life. I recalled, also, the singular espionage of which I had been the subject. I asked myself if I had better mention these things to Mr. Ward. But they seemed to have absolutely no relation to the matter now in hand. The Great Eyrie affair had been definitely put aside by the government, since an eruption was no longer threatening. And they now wished to employ me upon this newer matter. I waited, then, to mention this letter to my chief at some future time, when it would be not so sore a joke to me. Mr. Ward again took up our conversation. "We are resolved by some means to establish communication with this inventor. He has disappeared, it is true; but he may reappear at any moment, and in any part of the country. I have chosen you, Strock, to follow him the instant he appears. You must hold yourself ready to leave Washington on the moment. Do not quit your house, except to come here to headquarters each day; notify me, each time by telephone, when you start from home, and report to me personally the moment you arrive here." "I will follow orders exactly, Mr. Ward," I answered. "But permit me one question. Ought I to act alone, or will it not be better to join with me?" "That is what I intend," said the chief, interrupting me. "You are to choose two of our men whom you think the best fitted." "I will do so, Mr. Ward. And now, if some day or other I stand in the presence of our man, what am I to do with him?" "Above all things, do not lose sight of him. If there is no other way, arrest him. You shall have a warrant." "A useful precaution, Mr. Ward. If he started to jump into his automobile and to speed away at the rate we know of, I must stop him at any cost. One cannot argue long with a man making two hundred miles an hour!" "You must prevent that, Strock. And the arrest made, telegraph me. After that, the matter will be in my hands." "Count on me, Mr. Ward; at any hour, day or night, I shall be ready to start with my men. I thank you for having entrusted this mission to me. If it succeeds, it will be a great honor--" "And of great profit," added my chief, dismissing me. Returning home, I made all preparations for a trip of indefinite duration. Perhaps my good housekeeper imagined that I planned a return to the Great Eyrie, which she regarded as an ante-chamber of hell itself. She said nothing, but went about her work with a most despairing face. Nevertheless, sure as I was of her discretion, I told her nothing. In this great mission I would confide in no one. My choice of the two men to accompany me was easily made. They both belonged to my own department, and had many times under my direct command given proofs of their vigor, courage and intelligence. One, John Hart, of Illinois, was a man of thirty years; the other, aged thirty-two, was Nab Walker, of Massachusetts. I could not have had better assistants. Several days passed, without news, either of the automobile, the boat, or the submarine. There were rumors in plenty; but the police knew them to be false. As to the reckless stories that appeared in the newspapers, they had most of them, no foundation whatever. Even the best journals cannot be trusted to refuse an exciting bit of news on the mere ground of its unreliability. Then, twice in quick succession, there came what seemed trustworthy reports of the "man of the hour." The first asserted that he had been seen on the roads of Arkansas, near Little Rock. The second, that he was in the very middle of Lake Superior. Unfortunately, these two notices were absolutely unreconcilable; for while the first gave the afternoon of June twenty-sixth, as the time of appearance, the second set it for the evening of the same day. Now, these two points of the United States territory are not less than eight hundred miles apart. Even granting the automobile this unthinkable speed, greater than any it had yet shown, how could it have crossed all the intervening country unseen? How could it traverse the States of Arkansas, Missouri, Iowa and Wisconsin, from end to end without anyone of our agents giving us warning, without any interested person rushing to a telephone? After these two momentary appearances, if appearances they were, the machine again dropped out of knowledge. Mr. Ward did not think it worth while to dispatch me and my men to either point whence it had been reported. Yet since this marvelous machine seemed still in existence, something must be done. The following official notice was published in every newspaper of the United States under July 3d. It was couched in the most formal terms. "During the month of April, of the present year, an automobile traversed the roads of Pennsylvania, of Kentucky, of Ohio, of Tennessee, of Missouri, of Illinois; and on the twenty-seventh of May, during the race held by the American Automobile Club, it covered the course in Wisconsin. Then it disappeared. "During the first week of June, a boat maneuvering at great speed appeared off the coast of New England between Cape Cod and Cape Sable, and more particularly around Boston. Then it disappeared. "In the second fortnight of the same month, a submarine boat was run beneath the waters of Lake Kirdall, in Kansas. Then it disappeared. "Everything points to the belief that the same inventor must have built these three machines, or perhaps that they are the same machine, constructed so as to travel both on land and water. "A proposition is therefore addressed to the said inventor, whoever he be, with the aim of acquiring the said machine. "He is requested to make himself known and to name the terms upon which he will treat with the United States government. He is also requested to answer as promptly as possible to the Department of Federal Police, Washington, D. C., United States of America." Such was the notice printed in large type on the front page of every newspaper. Surely it could not fail to reach the eye of him for whom it was intended, wherever he might be. He would read it. He could scarce fail to answer it in some manner. And why should he refuse such an unlimited offer? We had only to await his reply. One can easily imagine how high the public curiosity rose. From morning till night, an eager and noisy crowd pressed about the bureau of police, awaiting the arrival of a letter or a telegram. The best reporters were on the spot. What honor, what profit would come to the paper which was first to publish the famous news! To know at last the name and place of the undiscoverable unknown! And to know if he would agree to some bargain with the government! It goes without saying that America does things on a magnificent scale. Millions would not be lacking for the inventor. If necessary all the millionaires in the country would open their inexhaustible purses! The day passed. To how many excited and impatient people it seemed to contain more than twenty-four hours! And each hour held far more than sixty minutes! There came no answer, no letter, no telegram! The night following, there was still no news. And it was the same the next day and the next. There came, however another result, which had been fully foreseen. The cables informed Europe of what the United States government had done. The different Powers of the Old World hoped also to obtain possession of the wonderful invention. Why should they not struggle for an advantage so tremendous? Why should they not enter the contest with their millions? In brief, every great Power took part in the affair, France, England, Russia, Italy, Austria, Germany. Only the states of the second order refrained from entering, with their smaller resources, upon a useless effort. The European press published notices identical with that of the United States. The extraordinary "chauffeur" had only to speak, to become a rival to the Vanderbilts, the Astors, the Goulds, the Morgans, and the Rothschilds of every country of Europe. And, when the mysterious inventor made no sign, what attractive offers were held forth to tempt him to discard the secrecy in which he was enwrapped! The whole world became a public market, an auction house whence arose the most amazing bids. Twice a day the newspapers would add up the amounts, and these kept rising from millions to millions. The end came when the United States Congress, after a memorable session, voted to offer the sum of twenty million dollars. And there was not a citizen of the States of whatever rank, who objected to the amount, so much importance was attached to the possession of this prodigious engine of locomotion. As for me, I said emphatically to my old housekeeper: "The machine is worth even more than that." Evidently the other nations of the world did not think so, for their bids remained below the final sum. But how useless was this mighty struggle of the great rivals! The inventor did not appear! He did not exist! He had never existed! It was all a monstrous pretense of the American newspapers. That, at least, became the announced view of the Old World. And so the time passed. There was no further news of our man, there was no response from him. He appeared no more. For my part, not knowing what to think, I commenced to lose all hope of reaching any solution to the strange affair. Then on the morning of the fifteenth of July, a letter without postmark was found in the mailbox of the police bureau. After the authorities had studied it, it was given out to the Washington journals, which published it in facsimile, in special numbers. It was couched as follows: Chapter 9 THE SECOND LETTER On Board the Terror July 15. To the Old and New World, The propositions emanating from the different governments of Europe, as also that which has finally been made by the United States of America, need expect no other answer than this: I refuse absolutely and definitely the sums offered for my invention. My machine will be neither French nor German, nor Austrian nor Russian, nor English nor American. The invention will remain my own, and I shall use it as pleases me. With it, I hold control of the entire world, and there lies no force within the reach of humanity which is able to resist me, under any circumstances whatsoever. Let no one attempt to seize or stop me. It is, and will be, utterly impossible. Whatever injury anyone attempts against me, I will return a hundredfold. As to the money which is offered me, I despise it! I have no need of it. Moreover, on the day when it pleases me to have millions, or billions, I have but to reach out my hand and take them. Let both the Old and the New World realize this: They can accomplish nothing against me; I can accomplish anything against them. I sign this letter: The Master of the World. Chapter 10 OUTSIDE THE LAW Such was the letter addressed to the government of the United States. As to the person who had placed it in the mail-box of the police, no one had seen him. The sidewalk in front of our offices had probably not been once vacant during the entire night. From sunset to sunrise, there had always been people, busy, anxious, or curious, passing before our door. It is true, however, that even then, the bearer of the letter might easily have slipped by unseen and dropped the letter in the box. The night had been so dark, you could scarcely see from one side of the street to the other. I have said that this letter appeared in facsimile in all the newspapers to which the government communicated it. Perhaps one would naturally imagine that the first comment of the public would be, "This is the work of some practical joker." It was in that way that I had accepted my letter from the Great Eyrie, five weeks before. But this was not the general attitude toward the present letter, neither in Washington, nor in the rest of America. To the few who would have maintained that the document should not be taken seriously, an immense majority would have responded. "This letter has not the style nor the spirit of a jester. Only one man could have written it; and that is the inventor of this unapproachable machine." To most people this conclusion seemed indisputable owing to a curious state of mind easily explainable. For all the strange facts of which the key had hitherto been lacking, this letter furnished an explanation. The theory now almost universally accepted was as follows. The inventor had hidden himself for a time, only in order to reappear more startlingly in some new light. Instead of having perished in an accident, he had concealed himself in some retreat where the police were unable to discover him. Then to assert positively his attitude toward all governments he had written this letter. But instead of dropping it in the post in any one locality, which might have resulted in its being traced to him, he had come to Washington and deposited it himself in the very spot suggested by the government's official notice, the bureau of police. Well! If this remarkable personage had reckoned that this new proof of his existence would make some noise in two worlds, he certainly figured rightly. That day, the millions of good folk who read and re-read their daily paper could to employ a well-known phrase, scarcely believe their eyes. As for myself, I studied carefully every phrase of the defiant document. The hand-writing was black and heavy. An expert at chirography would doubtless have distinguished in the lines traces of a violent temperament, of a character stern and unsocial. Suddenly, a cry escaped me a cry that fortunately my housekeeper did not hear. Why had I not noticed sooner the resemblance of the handwriting to that of the letter I had received from Morganton? Moreover, a yet more significant coincidence, the initials with which my letter had been signed, did they not stand for the words "Master of the World?" And whence came the second letter? "On Board the 'Terror.'" Doubtless this name was that of the triple machine commanded by the mysterious captain. The initials in my letter were his own signature; and it was he who had threatened me, if I dared to renew my attempt on the Great Eyrie. I rose and took from my desk the letter of June thirteenth. I compared it with the facsimile in the newspapers. There was no doubt about it. They were both in the same peculiar hand-writing. My mind worked eagerly. I sought to trace the probable deductions from this striking fact, known only to myself. The man who had threatened me was the commander of this "Terror"--startling name, only too well justified! I asked myself if our search could not now be prosecuted under less vague conditions. Could we not now start our men upon a trail which would lead definitely to success? In short, what relation existed between the "Terror" and the Great Eyrie? What connection was there between the phenomena of the Blueridge Mountains, arid the no less phenomenal performances of the fantastic machine? I knew what my first step should be; and with the letter in my pocket, I hastened to police headquarters. Inquiring if Mr. Ward was within and receiving an affirmative reply, I hastened toward his door, and rapped upon it with unusual and perhaps unnecessary vigor. Upon his call to enter, I stepped eagerly into the room. The chief had spread before him the letter published in the papers, not a facsimile, but the original itself which had been deposited in the letter-box of the department. "You come as if you had important news, Strock?" "Judge for yourself, Mr. Ward;" and I drew from my pocket the letter with the initials. Mr. Ward took it, glanced at its face, and asked, "What is this?" "A letter signed only with initials, as you can see." "And where was it posted?" "In Morganton, in North Carolina." "When did you receive it?" "A month ago, the thirteenth of June." "What did you think of it then?" "That it had been written as a joke." "And now Strock?" "I think, what you will think, Mr. Ward, after you have studied it." My chief turned to the letter again and read it carefully. "It is signed with three initials," said he. "Yes, Mr. Ward, and those initials belong to the words, 'Master of the World,' in this facsimile." "Of which this is the original," responded Mr. Ward, taking it up. "It is quite evident," I urged, "that the two letters are by the same hand." "It seems so." "You see what threats are made against me, to protect the Great Eyrie." "Yes, the threat of death! But Strock, you have had this letter for a month. Why have you not shown it to me before?" "Because I attached no importance to it. Today, after the letter from the 'Terror,' it must be taken seriously." "I agree with you. It appears to me most important. I even hope it may prove the means of tracking this strange personage." "That is what I also hope, Mr. Ward." "Only what connection can possibly exist between the 'Terror' and the Great Eyrie?" "That I do not know. I cannot even imagine." "There can be but one explanation," continued Mr. Ward, "though it is almost inadmissible, even impossible." "And that is?" "That the Great Eyrie was the spot selected by the inventor, where he gathered his material." "That is impossible!" cried I. "In what way would he get his material in there? And how get his machine out? After what I have seen, Mr. Ward, your suggestion is impossible." "Unless, Strock--" "Unless what?" I demanded. "Unless the machine of this Master of the World has also wings, which permit it to take refuge in the Great Eyrie." At the suggestion that the "Terror," which had searched the deeps of the sea, might be capable also of rivaling the vultures and the eagles, I could not restrain an expressive shrug of incredulity. Neither did Mr. Ward himself dwell upon the extravagant hypothesis. He took the two letters and compared them afresh. He examined them under a microscope, especially the signatures, and established their perfect identity. Not only the same hand, but the same pen had written them. After some moments of further reflection, Mr. Ward said, "I will keep your letter, Strock. Decidedly, I think, that you are fated to play an important part in this strange affair or rather in these two affairs. What thread attaches them, I cannot yet see; but I am sure the thread exists. You have been connected with the first, and it will not be surprising if you have a large part in the second." "I hope so, Mr. Ward. You know how inquisitive I am." "I do, Strock. That is understood. Now, I can only repeat my former order; hold yourself in readiness to leave Washington at a moment's warning." All that day, the public excitement caused by the defiant letter mounted steadily higher. It was felt both at the White House and at the Capitol that public opinion absolutely demanded some action. Of course, it was difficult to do anything. Where could one find this Master of the World? And even if he were discovered, how could he be captured? He had at his disposal not only the powers he had displayed, but apparently still greater resources as yet unknown. How had he been able to reach Lake Kirdall over the rocks; and how had he escaped from it? Then, if he had indeed appeared on Lake Superior, how had he covered all the intervening territory unseen? What a bewildering affair it was altogether! This, of course, made it all the more important to get to the bottom of it. Since the millions of dollars had been refused, force must be employed. The inventor and his invention were not to be bought. And in what haughty and menacing terms he had couched his refusal! So be it! He must be treated as an enemy of society, against whom all means became justified, that he might be deprived of his power to injure others. The idea that he had perished was now entirely discarded. He was alive, very much alive; and his existence constituted a perpetual public danger! Influenced by these ideas, the government issued the following proclamation: "Since the commander of the 'Terror' has refused to make public his invention, at any price whatever, since the use which he makes of his machine constitutes a public menace, against which it is impossible to guard, the said commander of the 'Terror' is hereby placed beyond the protection of the law. Any measures taken in the effort to capture or destroy either him or his machine will be approved and rewarded." It was a declaration of war, war to the death against this "Master of the World" who thought to threaten and defy an entire nation, the American nation! Before the day was over, various rewards of large amounts were promised to anyone who revealed the hiding place of this dangerous inventor, to anyone who could identify him, and to anyone who should rid the country of him. Such was the situation during the last fortnight of July. All was left to the hazard of fortune. The moment the outlaw re-appeared he would be seen and signaled, and when the chance came he would be arrested. This could not be accomplished when he was in his automobile on land or in his boat on the water. No; he must be seized suddenly, before he had any opportunity to escape by means of that speed which no other machine could equal. I was therefore all alert, awaiting an order from Mr. Ward to start out with my men. But the order did not arrive for the very good reason that the man whom it concerned remained undiscovered. The end of July approached. The newspapers continued the excitement. They published repeated rumors. New clues were constantly being announced. But all this was mere idle talk. Telegrams reached the police bureau from every part of America, each contradicting and nullifying the others. The enormous rewards offered could not help but lead to accusations, errors, and blunders, made, many of them, in good faith. One time it would be a cloud of dust, which must have contained the automobile. At another time, almost any wave on any of America's thousand lakes represented the submarine. In truth, in the excited state of the public imagination, apparitions assailed us from every side. At last, on the twenty-ninth of July, I received a telephone message to come to Mr. Ward on the instant. Twenty minutes later I was in his cabinet. "You leave in an hour, Strock," said he. "Where for?" "For Toledo." "It has been seen?" "Yes. At Toledo you will get your final orders." "In an hour, my men and I will be on the way." "Good! And, Strock, I now give you a formal order." "What is it, Mr. Ward?" "To succeed! This time to succeed!" Chapter 11 THE CAMPAIGN So the undiscoverable commander had reappeared upon the territory of the United States! He had never shown himself in Europe either on the roads or in the seas. He had not crossed the Atlantic, which apparently he could have traversed in three days. Did he then intend to make only America the scene of his exploits? Ought we to conclude from this that he was an American? Let me insist upon this point. It seemed clear that the submarine might easily have crossed the vast sea which separates the New and the Old World. Not only would its amazing speed have made its voyage short, in comparison to that of the swiftest steamship, but also it would have escaped all the storms that make the voyage dangerous. Tempests did not exist for it. It had but to abandon the surface of the waves, and it could find absolute calm a few score feet beneath. But the inventor had not crossed the Atlantic, and if he were to be captured now, it would probably be in Ohio, since Toledo is a city of that state. This time the fact of the machine's appearance had been kept secret, between the police and the agent who had warned them, and whom I was hurrying to meet. No journal--and many would have paid high for the chance--was printing this news. We had decided that nothing should be revealed until our effort was at an end. No indiscretion would be committed by either my comrades or myself. The man to whom I was sent with an order from Mr. Ward was named Arthur Wells. He awaited us at Toledo. The city of Toledo stands at the western end of Lake Erie. Our train sped during the night across West Virginia and Ohio. There was no delay; and before noon the next day the locomotive stopped in the Toledo depot. John Hart, Nab Walker and I stepped out with traveling bags in our hands, and revolvers in our pockets. Perhaps we should need weapons for an attack, or even to defend ourselves. Scarcely had I stepped from the train when I picked out the man who awaited us. He was scanning the arriving passengers impatiently, evidently as eager and full of haste as I. I approached him. "Mr. Wells?" said I. "Mr. Strock?" asked he. "Yes." "I am at your command," said Mr. Wells. "Are we to stop any time in Toledo?" I asked. "No; with your permission, Mr. Strock. A carriage with two good horses is waiting outside the station; and we must leave at once to reach our destination as soon as possible." "We will go at once," I answered, signing to my two men to follow us. "Is it far?" "Twenty miles." "And the place is called?" "Black Rock Creek." Having left our bags at a hotel, we started on our drive. Much to my surprise I found there were provisions sufficient for several days packed beneath the seat of the carriage. Mr. Wells told me that the region around Black Rock Creek was among the wildest in the state. There was nothing there to attract either farmers or fishermen. We would find not an inn for our meals nor a room in which to sleep. Fortunately, during the July heat there would be no hardship even if we had to lie one or two nights under the stars. More probably, however, if we were successful, the matter would not occupy us many hours. Either the commander of the "Terror" would be surprised before he had a chance to escape, or he would take to flight and we must give up all hope of arresting him. I found Arthur Wells to be a man of about forty, large and powerful. I knew him by reputation to be one of the best of our local police agents. Cool in danger and enterprising always, he had proven his daring on more than one occasion at the peril of his life. He had been in Toledo on a wholly different mission, when chance had thrown him on the track of the "Terror." We drove rapidly along the shore of Lake Erie, toward the southwest. This inland sea of water is on the northern boundary of the United States, lying between Canada on one side and the States of Ohio, Pennsylvania and New York on the other. If I stop to mention the geographical position of this lake, its depth, its extent, and the waters nearest around, it is because the knowledge is necessary for the understanding of the events which were about to happen. The surface of Lake Erie covers about ten thousand square miles. It is nearly six hundred feet above sea level. It is joined on the northwest, by means of the Detroit River, with the still greater lakes to the westward, and receives their waters. It has also rivers of its own though of less importance, such as the Rocky, the Cuyahoga, and the Black. The lake empties at its northeastern end into Lake Ontario by means of Niagara River and its celebrated falls. The greatest known depth of Lake Erie is over one hundred and thirty feet. Hence it will be seen that the mass of its waters is considerable. In short, this is a region of most magnificent lakes. The land, though not situated far northward, is exposed to the full sweep of the Arctic cold. The region to the northward is low, and the winds of winter rush down with extreme violence. Hence Lake Erie is sometimes frozen over from shore to shore. The principal cities on the borders of this great lake are Buffalo at the east, which belongs to New York State, and Toledo in Ohio, at the west, with Cleveland and Sandusky, both Ohio cities, at the south. Smaller towns and villages are numerous along the shore. The traffic is naturally large, its annual value being estimated at considerably over two million dollars. Our carriage followed a rough and little used road along the borders of the lake; and as we toiled along, Arthur Wells told me, what he had learned. Less than two days before, on the afternoon of July twenty-seventh Wells had been riding on horseback toward the town of Herly. Five miles outside the town, he was riding through a little wood, when he saw, far up across the lake, a submarine which rose suddenly above the waves. He stopped, tied his horse, and stole on foot to the edge of the lake. There, from behind a tree he had seen with his own eyes seen this submarine advance toward him, and stop at the mouth of Black Rock Creek. Was it the famous machine for which the whole world was seeking, which thus came directly to his feet? When the submarine was close to the rocks, two men climbed out upon its deck and stepped ashore. Was one of them this Master of the World, who had not been seen since he was reported from Lake Superior? Was this the mysterious "Terror" which had thus risen from the depths of Lake Erie? "I was alone," said Wells. "Alone on the edge of the Creek. If you and your assistants, Mr. Strock had been there, we four against two, we would have been able to reach these men and seize them before they could have regained their boat and fled." "Probably," I answered. "But were there no others on the boat with them? Still, if we had seized the two, we could at least have learned who they were." "And above all," added Wells, "if one of them turned out to be the captain of the 'Terror!'" "I have only one fear, Wells; this submarine, whether it is the one we seek or another, may have left the creek since your departure." "We shall know about that in a few hours, now. Pray Heaven they are still there! Then when night comes?" "But," I asked, "did you remain watching in the wood until night?" "No; I left after an hour's watching, and rode straight for the telegraph station at Toledo. I reached there late at night and sent immediate word to Washington." "That was night before last. Did you return yesterday to Black Rock Creek?" "Yes." "The submarine was still there?" "In the same spot." "And the two men?" "The same two men. I judge that some accident had happened, and they came to this lonely spot to repair it." "Probably so," said I. "Some damage which made it impossible for them to regain their usual hiding-place. If only they are still here!" "I have reason to believe they will be, for quite a lot of stuff was taken out of the boat, and laid about upon the shore; and as well as I could discern from a distance they seemed to be working on board." "Only the two men?" "Only the two." "But," protested I, "can two be sufficient to handle an apparatus of such speed, and of such intricacy, as to be at once automobile, boat and submarine?" "I think not, Mr. Strock; but I only saw the same two. Several times they came to the edge of the little wood where I was hidden, and gathered sticks for a fire which they made upon the beach. The region is so uninhabited and the creek so hidden from the lake that they ran little danger of discovery. They seemed to know this." "You would recognize them both again?" "Perfectly. One was of middle size, vigorous, and quick of movement, heavily bearded. The other was smaller, but stocky and strong. Yesterday, as before, I left the wood about five o'clock and hurried back to Toledo. There I found a telegram from Mr. Ward, notifying me of your coming; and I awaited you at the station." Summed up, then, the news amounted to this: For forty hours past a submarine, presumably the one we sought, had been hidden in Black Rock Creek, engaged in repairs. Probably these were absolutely necessary, and we should find the boat still there. As to how the "Terror" came to be in Lake Erie, Arthur Wells and I discussed that, and agreed that it was a very probable place for her. The last time she had been seen was on Lake Superior. From there to Lake Erie the machine could have come by the roads of Michigan, but since no one had remarked its passage and as both the police and the people were specially aroused and active in that portion of the country, it seemed more probable, that the "Terror" had come by water. There was a clear route through the chain of the Great Lakes and their rivers, by which in her character of a submarine she could easily proceed undiscovered. And now, if the "Terror" had already left the creek, or if she escaped when we attempted to seize her, in what direction would she turn? In any case, there was little chance o following her. There were two torpedo-destroyers at the port of Buffalo, at the other extremity of Lake Erie. By treaty between the United States and Canada, there are no vessels of war whatever on the Great Lakes. These might, however, have been little launches belonging to the customs service. Before I left Washington Mr. Ward had informed me of their presence; and a telegram to their commanders would, if there were need, start them in pursuit of the "Terror." But despite their splendid speed, how could they vie with her! And if she plunged beneath the waters, they would be helpless. Moreover Arthur Wells averred that in case of a battle, the advantage would not be with the destroyers, despite their large crews, and many guns. Hence, if we did not succeed this night, the campaign would end in failure. Arthur Wells knew Black Rock Creek thoroughly, having hunted there more than once. It was bordered in most places with sharp rocks against which the waters of the lake beat heavily. Its channel was some thirty feet deep, so that the "Terror" could take shelter either upon the surface or under water. In two or three places the steep banks gave way to sand beaches which led to little gorges reaching up toward the woods, two or three hundred feet. It was seven in the evening when our carriage reached these woods. There was still daylight enough for us to see easily, even in the shade of the trees. To have crossed openly to the edge of the creek would have exposed us to the view of the men of the "Terror," if she were still there, and thus give her warning to escape. "Had we better stop here?" I asked Wells, as our rig drew up to the edge of the woods. "No, Mr. Strock," said he. "We had better leave the carriage deeper in the woods, where there will be no chance whatever of our being seen." "Can the carriage drive under these trees?" "It can," declared Wells. "I have already explored these woods thoroughly. Five or six hundred feet from here, there is a little clearing, where we will be completely hidden, and where our horses may find pasture. Then, as soon as it is dark, we will go down to the beach, at the edge of the rocks which shut in the mouth of the creek. Thus if the 'Terror' is still there, we shall stand between her and escape." Eager as we all were for action, it was evidently best to do as Wells suggested and wait for night. The intervening time could well be occupied as he said. Leading the horses by the bridle, while they dragged the empty carriage, we proceeded through the heavy woods. The ; 1 . , 2 , ; 3 4 , 5 , , 6 , 7 8 . 9 10 " 11 . 12 , 13 , . 14 , , . 15 , 16 ; , 17 - , . 18 , , 19 , 20 . 21 22 " 23 ? . 24 , , , , 25 , , , 26 . , , 27 - , 28 , 29 , , 30 . 31 32 " , 33 , , 34 35 ? , , 36 - . 37 38 " , 39 40 . , , 41 " " , 42 . 43 ; 44 . , 45 . , , 46 . 47 48 " ' ' , 49 50 . 51 52 " 53 54 . 55 56 " . 57 ? ? 58 ? 59 ? ? " 60 61 62 : " , 63 . . 64 65 " 66 , ? " 67 68 69 70 71 72 73 74 75 76 . 77 . 78 ; ! 79 80 81 . 82 , , ? 83 . 84 , 85 , , , 86 , , 87 . , , 88 . 89 90 . 91 , , 92 . ! 93 . 94 . , 95 , 96 . 97 , ! 98 , 99 . 100 ; 101 . 102 103 , ; 104 . 105 . - 106 . 107 ? , 108 ? , ? ! 109 110 , 111 . , 112 . 113 . , , 114 . , 115 . 116 117 - , 118 . . 119 120 " , , " , " 121 . " 122 123 " ? " 124 125 " . " 126 127 " ? " , , . 128 129 " , , " . " 130 - ? " 131 132 " , . . 133 , , 134 . , . " 135 136 " , . 137 . " 138 139 . 140 . , , 141 . . 142 ; 143 . . 144 145 . , " , 146 , 147 ; . 148 . 149 , . 150 , . " 151 152 " . " 153 154 " , " . , , " 155 , 156 . , ; 157 ! " 158 159 " ? " 160 161 " ; , 162 , , 163 . 164 , 165 ! " 166 167 " , " , " 168 . " 169 170 " , . 171 , 172 . " 173 174 . . , 175 , 176 . 177 , 178 , 179 . 180 181 " , " . , " 182 , . 183 . 184 , , 185 ? " 186 187 188 . 189 . , 190 191 . 192 " " , 193 . 194 195 . 196 . , , 197 . 198 , 199 ? 200 ? 201 , ! 202 203 ? , 204 , ? 205 206 , 207 , 208 . , , 209 . 210 . . 211 . 212 , . 213 . , 214 , , 215 . 216 217 . . " 218 . 219 , ; , 220 . , , 221 . 222 . , 223 ; , , 224 , 225 . " 226 227 " , . , " . " 228 . , 229 ? " 230 231 " , " , . " 232 . " 233 234 " , . . , 235 , ? " 236 237 " , . 238 , . . " 239 240 " , . . 241 , 242 . 243 ! " 244 245 " , . , . 246 , . " 247 248 " , . ; , , 249 . 250 . , - - " 251 252 " , " , . 253 254 , 255 . 256 , - 257 . , 258 . , , 259 . . 260 261 . 262 , 263 , . , 264 , , ; , 265 - , , . 266 . 267 268 , , , 269 , . ; 270 . 271 , , . 272 273 . 274 275 , , 276 " . " 277 , . , 278 . 279 280 , ; 281 - , 282 , . 283 , 284 . 285 , , 286 ? 287 , , , 288 , 289 ? 290 291 , , 292 . . 293 294 . 295 296 , 297 . 298 . 299 . 300 301 " , , 302 , , , 303 , , ; - 304 , , 305 . . 306 307 " , 308 309 , . . 310 311 " , 312 , . . 313 314 " 315 , 316 , . 317 318 " , 319 , . 320 321 " 322 . 323 324 , , . . , . " 325 326 327 . 328 , . . 329 . 330 ? . 331 332 . 333 , 334 , . 335 . , 336 ! 337 ! 338 ! 339 . 340 . 341 ! 342 343 . 344 - ! 345 ! , , ! 346 , . 347 . 348 349 , , . 350 351 . 352 . 353 ? 354 ? 355 356 , , , , 357 , , , . 358 , , 359 . 360 . " " , 361 , , , 362 , . 363 364 , , 365 366 ! , 367 . 368 , 369 . , 370 , . 371 , 372 , 373 . , 374 : " 375 . " 376 377 , 378 . 379 ! ! 380 ! ! 381 . , , 382 . 383 384 . , 385 . . , 386 , 387 . 388 389 , 390 . 391 , 392 , , . 393 : 394 395 396 397 398 399 400 401 402 403 404 405 . 406 407 , 408 409 410 , 411 , 412 : 413 414 415 . 416 417 , 418 , . 419 420 , 421 . 422 423 , , 424 425 , . 426 427 . , 428 , . 429 , . 430 431 , ! 432 . , 433 , , 434 . 435 436 : 437 ; 438 . 439 440 : 441 442 . 443 444 445 446 447 448 449 450 451 452 . 453 - , 454 . 455 456 457 . , 458 , , , , 459 . , , , 460 461 . , 462 . 463 464 465 . 466 , 467 " . " 468 , . 469 470 , 471 , . 472 473 , . " 474 . 475 ; . " 476 477 478 . 479 , 480 . 481 . , 482 . 483 , 484 . 485 486 . , 487 , 488 489 ' , . 490 491 ! 492 , 493 . , 494 - - , 495 . 496 497 , 498 . - . 499 500 , . , 501 . 502 503 ? 504 505 , , 506 , " 507 ? " 508 509 ? " ' . ' " 510 511 . ; 512 , 513 . 514 515 . 516 . 517 . - . 518 519 . 520 , . 521 " " - - , 522 ! 523 . 524 ? , 525 " " ? 526 527 , 528 ? 529 530 ; 531 , . . 532 , 533 , . 534 , . 535 536 , 537 , 538 - . 539 540 " , ? " 541 542 " , . ; " 543 . 544 545 . , , , " ? " 546 547 " , . " 548 549 " ? " 550 551 " , . " 552 553 " ? " 554 555 " , . " 556 557 " ? " 558 559 " . " 560 561 " ? " 562 563 " , , . , . " 564 565 . " 566 , " . 567 568 " , . , , ' 569 , ' . " 570 571 " , " . , . 572 573 " , " , " 574 . " 575 576 " . " 577 578 " , 579 . " 580 581 " , ! , 582 . ? " 583 584 " . , 585 ' , ' . " 586 587 " . . 588 . " 589 590 " , . . " 591 592 " ' ' 593 ? " 594 595 " . . " 596 597 " , " . , " 598 , . " 599 600 " ? " 601 602 " , 603 . " 604 605 " ! " . " 606 ? ? , . 607 , . " 608 609 " , - - " 610 611 " ? " . 612 613 " , 614 . " 615 616 " , " 617 , 618 , . 619 . . 620 621 . 622 , , 623 . , 624 . 625 626 , . , " 627 , . , , 628 629 . , ; 630 . , 631 . " 632 633 " , . . . " 634 635 " , . . , 636 ; ' 637 . " 638 639 , 640 . 641 . 642 , . 643 ? , 644 ? 645 , . 646 ; 647 ? , , 648 ? 649 650 ! , , 651 . 652 , . 653 . 654 ! ! 655 , , 656 . 657 . , ; 658 ! 659 660 , 661 : 662 663 " ' ' 664 , , 665 , 666 , ' ' 667 . 668 669 . " 670 671 , " 672 " , 673 ! 674 675 , 676 677 , , 678 . 679 680 . 681 . - 682 , 683 . 684 . ; 685 , 686 . 687 688 , . 689 . 690 . 691 . . 692 . . 693 . 694 , 695 . 696 , , , , , . 697 , 698 . , ' 699 . , 700 , 701 . 702 703 , - , 704 . . 705 . 706 707 " , , " . 708 709 " ? " 710 711 " . " 712 713 " ? " 714 715 " . . " 716 717 " , . " 718 719 " ! , , . " 720 721 " , . ? " 722 723 " ! ! " 724 725 726 727 728 729 730 731 732 733 734 ! 735 . , 736 . 737 ? 738 ? 739 740 . 741 742 . 743 , , 744 . 745 . 746 , . 747 748 , 749 , , 750 . 751 752 ' , 753 , 754 . - - 755 - - . 756 . 757 . 758 759 . 760 . . 761 . 762 . ; 763 . 764 765 , 766 , . 767 , . 768 . 769 , 770 . 771 772 . " . ? " . 773 774 " . ? " . 775 776 " . " 777 778 " , " . . 779 780 " ? " . 781 782 " ; , . . 783 ; 784 . " 785 786 " , " , . 787 " ? " 788 789 " . " 790 791 " ? " 792 793 " . " 794 795 , . 796 797 . . 798 . 799 . 800 . 801 , 802 . 803 804 , , , 805 . " " 806 , 807 . 808 809 , . 810 811 . , 812 . 813 , 814 " . " 815 816 , . 817 818 , , 819 . 820 , , , 821 , 822 . 823 824 . 825 . 826 , , 827 , . 828 , , 829 , . 830 . 831 832 833 . 834 . , . 835 , , 836 . , 837 . 838 . 839 840 841 , , , 842 , , , . 843 . 844 , 845 . 846 847 848 ; , , 849 . 850 851 , - 852 . 853 , , 854 , , 855 . , , 856 . , 857 , 858 . 859 , ? 860 861 , 862 . 863 , 864 ? " " 865 ? 866 867 " , " . " . 868 , . , , 869 870 . " 871 872 " , " . " 873 ? , , 874 . " 875 876 " , " , " 877 ' ! ' " 878 879 " , ; , 880 , . " 881 882 " , . 883 ! ? " 884 885 " , " , " ? " 886 887 " ; ' , 888 . 889 . " 890 891 " . 892 ? " 893 894 " . " 895 896 " ? " 897 898 " . " 899 900 " ? " 901 902 " . , 903 . " 904 905 " , " . " 906 - . ! " 907 908 " , 909 , ; 910 . " 911 912 " ? " 913 914 " . " 915 916 " , " , " 917 , , , 918 ? " 919 920 " , . ; . 921 , 922 . 923 924 . . " 925 926 " ? " 927 928 " . , , , 929 . , . 930 , , ' 931 . . , 932 ; . " 933 934 , , : 935 , , 936 , . 937 , . 938 " " , , 939 . 940 . 941 , 942 943 , 944 , " " . 945 , 946 947 . 948 949 , " " , 950 , 951 ? , . 952 - , 953 . 954 , . 955 , , 956 . . 957 ; , 958 , " . " 959 , ! 960 , . 961 , 962 , , . , 963 , . 964 965 , 966 . 967 . 968 , " " 969 . 970 971 , . 972 973 . 974 , 975 . 976 " , " 977 , . 978 979 " ? " , 980 . 981 982 " , . , " . " 983 , 984 . " 985 986 " ? " 987 988 " , " . " 989 . , 990 , , 991 . , , 992 , . 993 ' ' , 994 . " 995 996 , 997 . 998 . , 999 , . 1000