CHAPTER TWO OF ARK OF THE COVENANT Clues and False Leads IT WAS around quarter past eight o'clock when I got back to the National Metallurgical. I found it difficult to realize that only an hour had passed since I had landed with my father at the seaplane jetty on the west side of Battery Park, and I had a feeling that the time should have been close to noon at least, for the hour had been crammed with incident and impression. A number of the bank executives had arrived, and the place already had a flustered air of activity. The chief accountant was with my father, and judged by the look of him that he was a very scared man. Apparently he and the president had been calculating the bank's losses, for as I came into the room the old man drew a firm line under two rows of figures he had written on a small piece of paper. "A good haul, Risbridger," my father was saying casually. "Two hundred and fifty-three thousand, five hundred dollars in gold. Two hundred and thirty-four thousand, seven hundred in securities. But God knows they didn't take all we had. You had better see about broadcasting the descriptions and numbers of the securities, and inform the police. If the thieves have not succeeded in getting out of the country, we may get a line on them, should they attempt to dispose of the scrip. See to this at once, will you?" The white-faced official scurried away, glad to have something to occupy his mind, and my father turned to me. I told him everything I had picked up, and he listened without comment until I had finished. "M'm," he said. "That's a queer thing about the gold tarnishing. What do you make of it, son?" "I don't know quite what to make of it," I told him. "My mind somehow connects it with whatever was used to dope the watchmen and the police. The stuff would have to be distributed in such a way that its fumes could be breathed. The whole affair has such unusual features, it might even prove that if we were to discover what had sent everyone to sleep, we might land on the thing that tarnished Jaxon's watch and the policeman's locket. I don't know of anything that has such an effect on gold, nor of anything capable of producing the anaesthesia. I'm inclined to think some sort of gas was used. The first difficulty we're up against is that none of the sufferers were conscious of even the slightest smell." "Whew!" my father whistled. "A new gas, eh? If you're right, Jimmy, we're up against a big thing. When a gang of crooks can put the whole of the Wall Street district to sleep and get away with it, can you prophesy where the game finds its limit?" "It opens up limitless possibilities," I agreed. "There's no saying where this morning's work will end," the old man mused. "As it stands, if the other banks have been as easily entered as we have, there's the makings of a fine old panic." "If there's going to be ructions, dad--don't you think you'd better meet them in comfort? What about a bath and breakfast?" The old man surprised me by letting out a sudden little laugh, with a queer note in it, as if some hidden chord in his memory had been struck. "You're like your mother, Jimmy," he said, after a pause. "You have her fair hair and grey eyes, and when you said that--I could fancy it was she who spoke. You see, son, life was pretty full of ructions in the old days, and you said the very thing she would have said when trouble was brewing. You don't remember your mother?" I shook my head. My mother died when I was an infant, and I had never created any definite picture of her, to a great extent, because my father seldom spoke of her. I expect it was that he missed her too much. She had been dead close on thirty-five years, but I could see, even then in his presidential room, how much she still meant to him. He looked at me queerly, and I have never seen him so softened either before or since. "No," he said slowly. "You were only a very little fellow when--" He broke off and lifted his shoulders in a sigh. "You're right," he said. "Breakfast's the idea." I anticipated that by this time there would be a jam in the subways and on the street cars, and as I wanted him to have as little physical exertion as possible, I telephoned for an automobile. While we waited my father issued instructions for carrying on in his absence. When the car came, we rode uptown through the rapidly filling streets to a quiet hotel where he would not be recognized, and we both had a bath and shave before breakfast. I was wishing now that I knew enough about banking to stand by during the crisis I felt was imminent; not that I fancied my father could not stand alone, but I think my wish came largely out of the new realization of how much I cared for the old man. I wanted to be of some assistance, but I did not know just how. I spoke to him about it as we were finishing breakfast. "Look here, dad," I said. "I want to stand by. I can be of no use to you on the banking side, but I could be a fairly good watch-dog. If I can do anything to keep trouble some people off you, or if I can run errands or attend to the commissariat--just say the word. I'll do anything I can." "I know that, son," the old man smiled, "but I'm well supplied with watch-dogs and messengers, who know my ways. No. Listen. I'll give you better than that to do. My hands will be full of the complications that are bound to rise from this raid on the banks, and I won't have time for anything else. In that tarnishing of the gold idea you've hit on something that maybe will give you further ideas, and I'd like you to follow up your theory of the gas and see what it leads to. You're an engineer, and you'll attack the problem from a different angle from that of the average detective. You can have a free hand in the matter of expense." The old man's suggestion almost took my breath away, and I fancy my face got red. I must explain that while my father and myself had been good enough friends up to this, our way had lain very much apart. He was devoted to his banking business, and I was immersed in aeronautical research. There had been times when we did not meet for months and when we came together again it had simply been, "Hullo, Jimmy!" and "Hullo, dad!" -- pretty much as if we had parted overnight. I knew all right what I thought of him. What he thought of me had been another story. That he had a good enough opinion of me to hand me a job of this sort, and give me the run of his purse with it, put me in such a way that I could only nod acceptance. "Good boy," said he. "Now here's another point. During the day you'll be free to conduct your investigations, but I shall want you to fly me into the country every evening. I'm not going to stop in town and have the telephone buzzing in my ear all night. I'll keep Hazeldene open and live there. Can you do it?" "Do it!" I cried. "Why, dad, there's nothing I'd like better--and if at any time I should be called away on this job, you'll find Milliken a first-class man." "That's settled then. I take it you have something better in your shed than the old seaplane you used this morning?" "You bet. There's my own Merlin. Three hundred kilometres and more an hour are nothing to her. I'll have her tuned up for you right away. I can get you from the Battery to Hazeldene well inside the half-hour." "Bully!" said the old man, and rose with a cigar going strong. "Now I must get back to the back, son." Some Powdered Glass WE drove back to the Metallurgical through streets that seethed with excited humanity. Newsboys were running about, offending the car with unlawful and raucous yells, flourishing newsbills that smote the eyeballs with their flaming scarelines. One journal, apparently despairing of adjectives sufficiently lurid to describe the reported enormity of the raid on the banks, had printed a sheet containing nothing but one large exclamation mark. Broadway was Babel. At every other corner policemen were trying to move on the crowds that inevitably clustered round each fortunate with a newspaper, and so dense was the press at the lower end of Broadway that it took two mounted men nearly a quarter of an hour to drive a path for the car through the last hundred paces to the bank door. Once we were inside, I immediately got through to my mechanic, Milliken, on the telephone, and told him to tune up the Merlin. Wise fellow that he is, he had anticipated the order, and could promise to have the plane ready in a couple of hours. Next I spoke to the housekeeper at Hazeldene and arranged for the place to be kept open for my father and myself. In the ordinary way I lived in a hut close to the hangar and workshops on the beach, only joining my father at Hazeldene when he went there for the week ends. He had been at the cottage on one of these visits when the news of the robbery had pulled him out of bed for our flight this Monday morning. I was on the point of stepping out to make what investigations I could when my father called me into his room. He had come upon an old Eastern piece of gold money which he kept as a curiosity in one of the drawers of his desk. It was not of the ordinary disc shape, but was like two little beans stuck together crosswise and turned over each other. I had seen it before as a shining piece of particularly pure gold, but now it was sadly dulled to a colour with which I was becoming familiar. "You had better keep that, Jimmy, my father said. "I expect you'd like to have a sample of the tarnishing." I was glad to have it, and I wrapped it in a scrap of tissue paper before placing it in an empty matchbox to keep it from being rubbed. I intended to have the tarnishing analyzed in the hope that the result would furnish some clue to the anaesthetic used by the crooks, for to my mind the crux of the whole affair lay in the mystery of the two lost hours. This was the thing I determined to follow up in the best way I could. I had no other notion of where to make a start. When I reached the street, the crowd in front of the bank was thining before the manoeuvres of the police, and I waited in the doorway until there was room to move. In a little I was able to cross Broadway, and it was when I had reached the opposite sidewalk that a slight accident happened to me which was the means of furnishing another step in the development of my theories. To avoid bumping into a fellow who was hurrying past on the sidewalk, I stepped short on the curb. My foot slipped and I came down on my hands. I felt my palms sting, as though I had landed on some sharp sand, but when I stood up to brush the stuff off, I saw that my skin was full of little splinters of glass. It was no conscious alertness that made me look down on the curb, but just the ordinary human foolishness that always makes a fellow turn to look when he has trodden on a banana skin. My interest was caught by a smear of powdered glass along the curb and in the gutter--like the result of breaking an electric bulb, only bigger. There was something about the pulverization and distribution of the stuff that made me look closer still. I was suddenly taken with a notion of what the stuff stood for, and I swept a few grains of the powder together and wrapped them in tissue paper, placing the tiny packet beside the coin in the match-box. My next idea was to have a look round the outside, at least, of the other banks. I walked down Broadway to the Guaranty Trust and, acting on the idea that was simmering in my head, I scrutinized the sidewalks and the roadway round about. I half expected to come upon another of the smears I had discovered opposite the National Metallurgical, but was disappointed. There had been, however, a fairly dense crowd all down Broadway that morning, and I was not ready to dismiss the possibility that the same sort of smear had been in the street sure enough, until the trampling of many feet had dispersed it. By the Subtreasury, at the corner of Pine Street and Nassau Street, I had better luck. Here again the height of the curb had saved the smear of powdered glass from being completely obliterated. I took a sample of this, too, and numbered the package in which I folded it. Next I went on down Pine Street until I came to the Dyers' National, but this time, although I worked as closely and as carefully as I could, I found no reward for my search. Remained then the last of the raided banks, the Trade Bank, and I walked round to take up my investigations there. Right in the middle of Broad Street where it joins Wall Street, I found another sprinkle of powdered glass. Passing feet had made it very faint, but luckily the morning had been dry, and the traces left were unmistakable. I reckoned now that I had reasonable grounds on which to work out my notion, and I contented myself with picking up what I could of the powder on a finger-tip to test its nature. It had the same character as my two samples. A Pop Added BY this time I had four ideas firmly fixed in my head, and could not be quit of them; that the crooks had used an anaesthetizing gas; that this gas probably had tarnished the gold; that the gas, in liquid form, had been held in glass containers; and that the smears of powder outside the three banks were what was left of the containers after the release of the gas had shattered them. These were a weirdly fanciful lot of notions, I admit, but like the rest of those concerned, I was more absorbed by the idea of the mysterious sleep that had fallen on the district during those two dead hours, than by the magnitude of the robbery itself. It was all guess-work, and probably mad guess-work at that, but at the time guess-work was about all anyone had to start from. In any case, I thought the coincidence that smears of pulverized glass should be outside three of the robbed banks sufficiently strange to be worth working on, and in pursuit of the ideas it gave birth to I went in search of the policeman of the tarnished locket. I was afraid he would have gone off duty, but my luck held, and I came upon him practically on the same spot where I had parted with him earlier in the morning. He had just been relieved and was going home. I walked with him up Broadway in the direction of the National Metallurgical. "There is a point on which I'd like to ask you a question or two, McGrath," I said. "Shoot !" "Before you fell asleep or became unconscious this morning, did you hear anything of an explosion?" He stopped dead in his tracks to stare at me. "Faith--now you mintion ut," he said slowly, "I believe I did hear a bit of a pop. Nothing to startle ye, mind--just a quiet little pop, like ye'd be hearin' when a child burst a paper bag." "Where were you when you heard this pop, as you call it ?" "Let me see, now," he mused. "I'd be standin' right foreninst th' Exchange when I heard ut." "You didn't hear more than one?" "I might have. But, d'ye see, ut was the sort av noise that might be comin' from the uptown traffic, and not at all the noise that would swing ye round to see what ut was." "How long after hearing the noise would it be before you became unconscious?" "Now ye've got me, for ut's a thing I can't tell ye," the big fellow said. "I'm told that I was asleep for two hours--but, if ye ask me, I say ut was a bare five minutes from hearin' the pop until I woke up and found myself lyin' on the sidewalk." "After the noise, did you become conscious of any peculiar odour--even of the slightest?" "No, divil a whiff av any sort," he said positively--then with a twinkle, "unless maybe what was left behind from the big cigars av the millionaires." "That might make your eyes water, but would hardly send you to sleep," said I. "Before you became unconscious, did you see any haze or mist coming up?" "There was nothin' but maybe a kinda blueness in the Street--" he began, then broke off: "B' the holy piper!" he exclaimed. "Come to think av ut, ut was an odd kinda haze, too!--like nothin' so much as the way the letters on me watch would show in a dark corner, or like wan av thim old fashioned matches would be if ye was to spit on ut in the dark--but more spread about and thinned down." "Ah, phosphorescent !" "I wouldn't be puttin' a name like that to ut, so I wouldn't," he said carefully. "If ye understand me, ut was almost too faint to notice. All I say is the Street looked like ghosts might " "Thank you, McGrath," I told him. "You've given me just what I wanted to know." "Is ut a bit av detectin' you're after?" he asked me. "Faith, Mr. Boon, ye've got things out av me that none av thim--polis or private--had the since to remind me av. One of me mates was sayin' that there's been some queer on-goin's up at the Post Office. Have ye heard anythin' at all about ut, Mr. Boon?" I had forgotten Dick Schuyler's casual reference to the Post Office and my interest was reawakened. "Commander Schuyler said something about-it," I said to McGrath. "Was the Post Office gassed and robbed, too?" "No. I wouldn't say that. I haven't got the rights av ut yet, but ut's just queer on-goin's that's rumoured." "Ut's a queer affair, so ut is," he went on, "and the more ye think av ut, the queerer ut is. There's me locket, now. D'ye think I can get the polish back on the thing? Not wan bit av ut. Ut's all pitted an' dirty-lookin'. What the girl will say, Hivin knows." "If you don't mind letting me have it," I volunteered, "I'll give you enough to buy another like it, and something for the girl as well. I'm interested in it." "Have ut, and welcome," said McGrath. "I'd been thinkin' I'd better get a new wan, an' say nothin' to Norah about ut, for I wouldn't like her to see ut that dirty. I know the store where ut was bought. Let me get the photy av her out av ut, an' ut's yours." He handed over the damaged trinket, and I gave him two ten-dollar bills. He was mightily pleased, for with the twenty dollars he could buy half a dozen lockets of the same kind, and when I turned into the bank he was grinning broadly as he went off to shoulder his way up the street. I added the locket to my tissue-wrapped trophies. My next concern was to interview Jaxon and his five men again. Normally they would have left the bank by this hour, but they were still hanging around in some faint hope of cheering news. I collected the six of them in a spare room, and questioned them along the same lines as I had used with McGrath. They all reiterated their former statement that there had been no odour, but three of them, including Jaxon, recalled having heard a faint pop before dropping off to sleep, and their descriptions of the noise were, on the whole, fairly close to that given me by the policeman. Four of them, also including Jaxon, now positively remembered a faint luminosity, and the other two thought they did. Jimmy Takes Counsel I NOW took my exhibits, as the police would call them, and my theory uptown to a friend of mine who has a great reputation in chemistry and physics, a clever little fellow called Dan Lamont, so well off that he can afford to have a first-class laboratory, and keep a big staff of assistants working on valuable but unremunerative research. He is a perfect little wizard, and many a time I had gone to him to be pulled out when the physics side of my work had me bogged. "Hullo, Jimmy !" he said, as soon as he saw me. "What's the trouble this time? Won't the coefficients come unstuck from the dihedrals, or is it that the helicopter still refuses to copt?" "You're wasted as a physicist, Dan," I told him. "You ought to go into vaudeville as the Unfunniest Back-chat Comedian Alive. Haven't you heard about the robbery?" "I'll bite--and then you can say your smart answer," he grinned. "What robbery?" There are days when Dan doesn't see a daily journal, and I guessed from his readiness to chaff that he had not heard about the banks. I told him. As I expected, he at once showed the liveliest interest. "Well, Jimmy!" he exclaimed. "What do you know about that? Most interesting; Christopher Columbus and the hard-boiled egg! Are you telling me that Wall Street was put to sleep for two hours while a gang of crooks helped themselves?" "That's just what I do tell you." "Phew!" He stood up and stared at me. Then he took out his loose change and rattled it in his cupped hands--a trick he has when very excited. "What makes you think the crooks used gas?" he demanded. "I can think of no other way in which they could dope the district," I said. "Can you?" "They might have fixed the water supply," he said softly. "No. Water isn't popular enough with the police and the watchmen to make that method effective. But, gas!" "What's your kick at the gas theory, Dan?" "Haven't you said that the people who went to sleep smelled no odour?" "That's right. Not a thing." "Then there isn't any gaseous anaesthetic known could do it," said Dan. "Let's see. The absence of odour rules out chloroform and ether straight off. Ethyl chloride--no--too smelly--and too lethal. You say nobody's dead?" "Not a soul so far." "Queer, queer! Nitrous oxide has no smell, but its effects last barely a minute. There may be a gas could do it, Jimmy, but I've never heard of it. What makes you so keen on the gas idea, anyhow?" I told him about the powdered glass, and showed it to him. Then I brought out the locket and my father's gold coin. Dan's excitement grew. "This is mighty interesting, Jimmy--mighty interesting," he purred. "I never heard of anything to tarnish gold in this way. Chlorine?--chlor--Hey?" he broke off as he examined McGrath's locket. "Who told you this was gold?" "It is gold," I insisted. "Looks more like copper to me." "Oh, shucks, Dan! It probably has a large percentage of copper in the alloy." I brought forward the instance of Jaxon's watch, but he took little notice of what I said. He was off on some scientific daydream. "This coin, too," he brooded. "At first sight I'd say it was copper." "That's where you fall down, young fellow," I said. "That coin was kept by my father as being a remarkably pure piece of gold. He had it tested." "May be so, my dear Jimmy--may be so," he said absently. "I'll tell you what. I'll analyze this tarnishing. Leave the locket and coin with me. They look to me to be impure alloys of copper--both of them. Most interesting! I can think of nothing to affect gold so." "No more can I, Dan," I said, "but I can think of none more likely to find out than yourself. When can I come back?" "Eh? Oh--ah--yes! Come back, eh? Oh, sometime this afternoon," he muttered, his gaze fixed on the coin and locket. "Gas, eh? Must think about it. Good fellow, Jimmy--to give me these. A new thing--mighty interesting. Good-bye, old man--" He wrung my hand and made a bee line for his laboratory, with the coin and locket held out in front of him in his cupped palms. I chuckled to think I had made Dan Lamont so interested, for I knew that the chemistry side of any investigations I wanted to make was in the most skillful hands in New York. I had enlisted the services of a powerful ally. An Official Whispers THE next thing I had to do was to get the Sieve back to Long Island and see how Milliken was getting on with the Merlin, but on the way down to the jetty I stopped to look in at the Post Office. There was a jam about the place, and the counters were crowded up. I wrote the name of the bank on one of the cards under my own name---which is the same as my father's--and handed the pasteboard to a messenger. "Are you Mr. Boon?" he asked suspiciously. "I am," said I. "Who is it you want to see?" he demanded. "Anybody in authority who has a minute to spare--" "Will Mr. Glover do?" "Fine," I said. "Lead the way to Mr. Glover." He conducted me along a passage into a nest of private rooms and tapped at a door. "Wait here" he said, and went into the room. He was out in a second. "Mr. Glover will see you." A bald-headed man at a desk in the centre of the room looked up with an ingratiating smile as I came in, but when he saw me his grin froze, and he rose in angry surprise from his chair. "What trick is this?" he demanded. "You are not Mr. Boon, sir! You are an impostor, sir--an impostor! Let me inform you that I am familiar with the appearance of the president of the National Metallurgical! I am an acquaintance of Mr. Boon!" "That's fine," said I. "Allow me to introduce to you his son, James Vandersluyt Boon, whose card you have in your hand." He looked at me suspiciously for a moment, then smoothed down, and held out his hand. I wondered at the change in his reception of me, but next moment it was explained. "Of course, of course !" he said heartily. "I might have known!" He waved a hand at the flying-kit I still was wearing. "You are the young conqueror of the air, our modern Icarus--though I trust not doomed to the same fate. I trust not," said the pompous ass. "Well, Mr. Boon, and what can I do for you?" I told him pretty snappily that I wanted a line on what had happened in the Post Office that morning, explaining that I was investigating everything that seemed to have any connection with the robbery of the banks. Mr. Glover looked hurriedly around the room, as if he were afraid somebody might be lurking in a corner. He dropped his voice mysteriously. "This is, of course, strictly entre nous," he said. "I can say nothing officially, you understand? It must go no further?" I said I quite understand--and found myself whispering like a fool when I said it. "Very well, then," said he. "I will tell you, Mr. Boon. A very strange thing happened here this morning. Five little packages, extremely heavy for their size, were dropped into the local collection box during the night or in the early hours. The box was cleared at seven, Mr. Boon, and it was then that they were found. They would have escaped notice, I do not doubt, had it not been for the peculiar circumstance that they were all without the requisite stamps--unstamped, Mr. Boon! The sorter put them aside, and when he came to deal with them later, he found that there were also five bulky envelopes, similarly without stamps. Now, here is a curious fact, Mr. Boon"--with another apprehensive glance about the room--"both the envelopes and the packages were all addressed to important hospitals and research institutions in the city, an envelope and a package to each of five institutions!" He leaned back to see the effect on me of this thrilling revelation. "You amaze me, Mr. Glover," said I. "Certainly a peculiar and suspicious circumstance." "Wasn't it!" Mr. Glover agreed. "The packages were all alike, and appeared to consist of heavy little boxes wrapped in corrugated cardboard and brown paper. Well, now. Naturally the Office was agog with the news of dastardly outrages in Wall Street, and the sorter somehow connected these envelopes and packages with the crime, Mr. Boon. He summoned his immediate chief, and the result of their colloquy was that packages and envelopes were held over for investigation by our police department." "Have they been opened yet?" I asked. Mr. Glover looked pained at my lack of finesse. "Not officially, Mr. Boon--not officially. Special authority is needed for that." He dropped his voice to a whisper more confidential than ever. "But I can tell you--quite unofficially, of course--that the square packages contained black boxes of wood, inside which were what at first sight appeared to be lumps of solid lead. Closer investigation, however, proved these last to be lead cases with extremely thick sides." "What was in the lead cases?" Mr. Glover shook his head. "I cannot say," he said ponderously. "But as I am inclined to think some outrage is contemplated, I should say--explosives! But, as you may know there is a special department of the Post Office primarily concerned with the handling of such contingencies, and at the moment, Mr. Boon, an investigation is going forward--behind closed doors!" "You don't know what was in the envelopes?" Once more Mr. Glover was pained at my bluntness. "No. That I cannot tell," he said severely. "You now have all the information I can lay at your disposal, Mr. Boon--and that, sir, I beg you to remember, is quite unofficial--and sacrosanct. It must not be bruited abroad!" I admit that I saw little ground for connecting this mystery with the robberies round Wall Street, nor any need for secrecy. I was inclined to think Mr. Glover's love for the mysterious had led him into a fantastic interpretation of some silly joke on the institutions, but I thanked him with every appearance of being impressed, and took a speedy leave of him. I was not a little annoyed with myself for having wasted my time on the pedantic fool. But subsequent events, since made public, were to show me that Glover, for all his absurd pomposity, had got nearer the truth than I imagined, and that I had underestimated what was to prove one of the most surprising of a chain of happenings that ultimately were to baffle the whole world. Yet, as I say, at the time I thought the thing some ill-conceived joke on the institutions, or perhaps the result of an error on the part of some manufacturer's dispatch clerk, and I took little stock of it. Without pausing to look into the bank, I made for the seaplane jetty and the Sieve. Round the landing stage now, in addition to the bronze-painted machines of the police, a number of privately owned boats were moored. Luxuriously appointed craft, with their closed cabins and the silk or brocade curtains on their windows, they made the old Sieve look more disreputable than ever; but when I noticed that one or two of these swell conveyances belonged to bank presidents like my father, I smiled to think that my old tub, like a mongrel pup to a dog-fight, had been first on the scene of action. And as I set the old girl skimming down the Bay, I smiled still more when I thought how ornamental all that swagger fleet would look, once I got back in its midst with my lovely silver Merlin. She not only had the whole bunch beaten for sheer good looks, but--in the matter of speed--she was to the best of them what the hawk is to the peacock.