(Monday, October 17; 12 noon)
It was nearly noon the next day when Vance returned to New York. I was busily engaged on routine work when he came into the library, and he barely nodded to me as he passed through to the bedroom. I could plainly see, by his look of concentration and his eager movements, that something urgent was on his mind. A short while later he emerged in a gray Glen Urquhart plaid suit, a subdued green Homburg hat and heavy blucher shoes.
"It's a miserable day, Van," he remarked. "There's rain in the air, and we are going into the country. Put away your bookkeeping and come along. . . . But I must see Markham first. Phone his office that I'll be there in twenty minutes--there's a good fellow."
While I got in touch with the District Attorney's office, Vance rang for Currie and gave instructions regarding dinner.
Markham was alone when we arrived at the Criminal Courts Building.
"I've held up my appointments waiting for you," he greeted Vance. "What's the report?"
"My dear Markham--oh, my dear Markham!" protested Vance, sinking into a chair. "Must I make a report?" He became serious and looked thoughtfully at Markham. "The fact is, I have practically nothing to report. A very disappointin' trip."
"Why did you go to Princeton at all?" Markham asked.
"To visit an old acquaintance of mine," Vance returned. "Doctor Hugh Stott Taylor--one of the great chemists of our day. He's the Chairman of the Department of Chemistry at the University. . . . I spent a couple of hours with him last night, inspecting the Frick Chemical Laborat'ry."
"Just a general tour of inspection?" Markham asked, watching Vance shrewdly. "Or something specific?"
"No. Not general." Vance inhaled on his cigarette. "Quite specific. I was interested, d' ye see, in heavy water."
"Heavy water!" Markham sat bolt upright in his chair. "I've come across a reference somewhere to heavy water--"
"Yes--yes. Of course. There has been considerable about it in the papers. Amazin' discovery. One of the great events in modern chemistry. Fascinatin' subject."
He lay back in his chair and stretched his legs out before him.
"Heavy water is a compound in which the hydrogen atom weighs twice as much as the hydrogen atom in ordin'ry water. It's really a liquid in which at least ninety per cent of the molecules consist of oxygen combined with the recently discovered heavy hydrogen. The formula is H2H2O, though it is now generally referred to scientifically as D2O. The interestin' thing about it is that it looks and tastes like ordin'ry water. Actually, there is about one part of heavy water in five thousand parts of ordin'ry water; but because of the loss in the process of extraction, it comes nearer to requiring ten thousand parts of plain water to produce one part of the heavy water. In certain laborat'ries they have treated as much as three hundred gallons of ordin'ry water to produce one ounce of heavy water. The actual discovery of heavy water was made by Doctor Harold C. Urey of Columbia University. But a large part of the practical research in this new and amazin' compound has been done by the scientists at Princeton. The apparatus in the Frick Chemical Laborat'ry is the first that's been devised for the production of heavy water on any appreciable scale. And when I say 'appreciable scale' I'm speaking relatively; for Doctor Taylor told me last night that the daily output even at their plant is less than a cubic centimeter. But they're hopin' to step up production to about a teaspoonful a day. At present Princeton has on hand less than half a pint of this precious fluid. The cost of production is enormous; and because of the demand for samples of the liquid by scientists all over the country, the price asked for it is over a hundred dollars a cubic centimeter. A teaspoonful would cost over four hundred dollars, and a quart about a hundred thousand dollars. . . ."
He glanced up at Markham and continued.
"There are great commercial possibilities in this new commodity. Doctor Taylor tells me that already there is a chemical firm out west which has begun to market it."*
* As I write this record of the Casino murder case, I note, in a dispatch to The New York Times, that the Imperial Chemical Industries, an important British organization, have begun the commercial production of heavy water and hope in time to be able to supply it to chemists, physicists and physicians the world over, at about fifty dollars a teaspoonful.
Markham was profoundly interested, and he did not once take his eyes from Vance.
"You think, then, this heavy water is the answer to Saturday night's poisonings?"
"It may be one of the answers," Vance returned slowly, "but I doubt if it is the final answer. Too many things militate against its giving us the entire explanation. To begin with, its cost is almost prohibitive, and there is too little of it available to account for the recurrent water motif in the Llewellyn case."
"But what of its toxic effect on the human system?" Markham asked.
"Ah! Exactly. Unfortunately, no one knows what effects liberal quantities of heavy water, taken internally, would have upon a human being. Indeed, the very small amounts of heavy water obtainable have made experimentation in this direction practically impossible. One can only speculate. Professor Swingle, at Princeton, has proved that heavy water is lethal to small fresh- water fish like the Lebistes reticulatus; and the tadpole of the green frog and the flat-worm have been shown to survive but a short time when placed in heavy water. The growth of seedlings in heavy water is retarded or entirely suspended; and this inhibit'ry effect on the functioning of the life protoplasm has led some experimenters in San Francisco to the hypothesis that the indications of old age and senility are caused by the normal accumulation of heavy water in the body."
Vance smoked a moment and then added:
"However, I am not satisfied that these speculations have any direct bearing on our particular problem. On the other hand, I'm rather inclined to think, Markham, that we are INTENDED to work along just those lines. In any event, they may lead us to the truth."
"Just what do you mean by that?" demanded Markham.
"I met and talked with one of Doctor Taylor's bright young assistants last night--a Mr. Martin Quayle--an expert chemist, conscientious and resourceful, and a great asset to the doctor's staff. Personally, however, I shouldn't care to trust him too far. He has an inordinately ambitious nature. . . ."
"What has this fellow Quayle to do with my question?" snapped Markham.
"Quayle, d' ye see, was a classmate of Bloodgood's. Two aspirin' young chemists. Very good friends. Everything gemütlich."
Markham studied Vance thoughtfully for a moment. Then he shook his head.
"I feel there's a vague connection somewhere in that information," he said; "but I still can't see what possible bearing it has on the problem we're trying to solve."
"Neither can I," Vance admitted cheerfully. "I merely put the fact forward in lieu of anything more definite."
Markham had suddenly become irritable. He struck the desk with his fist.
"That being the case," he grumbled, "what have you gained by your mysterious trip to Princeton?"
"I really don't know," Vance returned blandly. "I'll admit I'm frightfully disappointed. I had hoped for much more. But I'm not entirely disconsolate. There's an elusive theme running through the water song, and I hope to know more about it tonight. I'm taking another trip this afternoon--into the country, this time. Behold these rustic togs in which I am incased. I'm countin' on the thought of Quayle to guide my gropin' footsteps."
Markham inspected Vance shrewdly for a brief time. Then he snorted and gave him a wry smile.
"The rigmarole of the Delphic oracle; the perfect fortune-telling manner; the crystal-gazer at work. I should be used to it by now. . . . So you're taking a jaunt into the country?"
"Yes," Vance murmured dulcetly. "Up Closter way--"
Markham leaped to his feet.
"What's that!" he fairly bellowed.
"Oh, my dear Markham, don't startle me so. You have far too much energy." Vance sighed. "I say, would you ask Swacker to find out what companies supply water and electric power to the domiciles in and around Closter?"
Markham spluttered and compressed his lips. Then he rang for his secretary and repeated Vance's request to him.
When Swacker had gone out again, Vance turned to Markham and continued.
"And when you get the names, will you write me a jolly sort of letter of introduction to the managers? I'm seekin' information--"
"What information?"
"If you must know," said Vance sweetly, "I wish to inquire into the amount of water and electricity consumed by a certain prominent citizen in the vicinity of Closter."
Markham sank back in his chair.
"Good God! Do you think that Kinkaid--?"
"My dear fellow!" Vance interrupted. "I'm not thinkin'. Too great an effort." He sighed elaborately and would say no more.
A few minutes later Swacker came in with the information that Closter and its environs were supplied by the Valley Stream Water Company and the Englewood Power and Light Company, both with offices in Englewood.
Markham dictated the letters Vance had asked for; and ten minutes later we were headed for Englewood, a few miles from Closter.
Englewood is only a short distance from New York, and, thanks to Vance's expert driving, we reached that flourishing little town in less than half an hour. Vance inquired the way to the offices of the Valley Stream Water Company and, once there, sent in his letter to the manager. We were received by a pleasant, serious man of about forty--a Mr. McCarty--in a small private office.
"What can I do for you, sir?" he asked, after shaking hands. "We will be glad to help in any way we can."
"I'm particularly interested," Vance told him, "in finding out how much water is consumed by a Mr. Richard Kinkaid, near Closter."
"That information is easily obtained." He went to a steel filing cabinet and, after a moment's search, took from it a small manila- colored meter-reading card. Returning to his desk, he glanced at the record and then raised his eyebrows in surprise.
"Ah, yes," he said, after a moment, as if suddenly remembering something. "I recall the circumstances now. . . . Mr. Kinkaid has a one-inch meter and uses a great quantity of water. His rate, in fact is based on the 40,000 to 400,000 cubic-feet-per-year schedule. . . ."
"And Mr. Kinkaid has nothing more than a moderate-sized hunting lodge," supplied Vance.
Mr. McCarty nodded.
"Yes, I realize that. The amount of water service used by Mr. Kinkaid is sufficient for a manufacturing plant. The large consumption was called to my attention over a year ago. I could not understand the figure, and of course I investigated. But I found that the customer was satisfied; and therefore we had no alternative but to continue the service."
"Tell me, Mr. McCarty," continued Vance; "is there any variation in the amount of water consumed by Mr. Kinkaid according to the time of year? That is, are his meter readings higher in the spring and summer months than in winter, when the lodge is closed?"
"No," the manager replied, his eyes still scanning the figures, "there is practically no variation. According to the card, as much water is consumed in the winter months as in the summer months."
At length he glanced up at Vance.
"Do you think we should look into the matter further?"
"Oh, no. No. I shouldn't look into it," Vance returned casually. "By the by, how long has this excessive consumption of water been going on?"
The manager looked down at the card again, turned it over, and scanned the figures on the reverse side.
"The water connections were installed over a year ago--in August, to be exact--and the heavy consumption began almost immediately."
Vance rose and extended his hand to the manager.
"Thank you very much, sir. That's really all I want to know. I appreciate your kindness."
From the offices of the Valley Stream Water Company, we went to the offices of the Englewood Power and Light Company, a few blocks away. Again Vance sent his letter in to the manager--a Mr. Browning---and once more we were received without delay. When Vance told him that he wished to check on Kinkaid's consumption of electric current, he gave Vance a curiously shrewd look.
"It is not our custom, you understand, sir, to give out information of this nature," he said in a dignified conservative manner. "But, in the circumstances, I feel justified in telling you that Mr. Kinkaid--who is well known hereabouts--arranged with me, over a year ago, for a sufficient capacity to properly meet his requirements--which, I may add, were far in excess of the usual demand in connection with a house or hunting lodge of that size. Negotiations were completed for a supply to meet the demand of five hundred kilowatts instead of the customary five kilowatts."
"Thank you for that information, sir." Vance offered a cigarette to Mr. Browning and took one himself. "But when Mr. Kinkaid arranged with you for this large supply of current, did he tell you for what purpose it was going to be used?"
"I naturally asked him that question," the manager returned, "and he explained merely that he required such a capacity for experimental purposes."
"You did not push the matter further?"
"Mr. Kinkaid informed me," the other replied, "that the experimental work which was to be done was of a more or less confidential nature; and my detailed interest in it naturally ended at that point. You appreciate the fact, of course, that our business, as well as our ideal, is to give the best possible service to the public."
"Your attitude, sir," returned Vance, with a slight inclination of the head, "is quite correct. I am most grateful to you for your confidence."
Mr. Browning rose.
"I'm sorry I can give you no more information--unless you would like to know the exact amount of power consumed."
"No, thank you," said Vance, starting for the door. "You've told me all that we need to know at present." And he took his departure.
When we were again in the car, Vance sat at the wheel for several minutes in indecisive abstraction. Then he took out his cigarette- case and, with great deliberation, lit another of his Régies.
"I think, Van," he said slowly, "we'll take a look at Kinkaid's retreat. I have a general idea where it is. If we go astray we can make inquiries."
He turned the car about and headed back toward the Hudson River. When we were again on route 9-W Vance turned north along the Palisades.
"There should be a narrow roadway somewhere within the next few miles, and there may be a sign to guide us," he said. "Keep your eye out. If we miss it we'll have to go to Closter and inquire our way from there."
But this was not necessary, for about two miles farther on we came upon a rustic weather-beaten guide-post at the entrance to a tree- lined private driveway leading away from the river, which told us that Kinkaid's hunting lodge was somewhere beyond.
Turning into this roadway, we came almost immediately to a densely wooded stretch of country. We were now in Bergen County, somewhere between Closter township and the New York state line, near that section of New Jersey called Rockleigh. Following this private road for perhaps half a mile, we suddenly came to a clearing in the centre of which stood an old two-story stone cottage, such as might have been built originally as a private residence. There was a look of utter desolation about it. The windows had been boarded up and there was a general air of desuetude about the small front porch and the massive door which was the main entrance to the lodge. Behind the house, on the right, was a metal garage. Vance drove his car into the dense thicket on the left and got out.
"It looks a bit deserted--eh, what, Van?" he commented as we approached the front door.
He pulled the old-fashioned brass knob several times; but though we could hear the tinkling of a bell within, there was no answer to his summons.
"I'm afraid there's no one here," he said. "And I had passionately hoped to gain access. Let's see what the rear of the place holds in store for us."
We walked down the pathway to the north, but instead of going directly to the back of the lodge, Vance continued on toward the garage. The door was slightly ajar, but on the latch hung a large padlock. Vance gave this padlock his careful attention and then glanced into the garage.
"Signs of recent life," he murmured. "There's no car, but there's neither dust nor rust on the lock. Moreover, there are marks of automobile tires on the roadway, as well as traces of fresh oil on this cement flooring. Conclusion: the inhabitant or inhabitants of the lodge have only recently departed. Destination and time of his, or their, return, problematical."
He looked up at the rear elevation of the lodge and smoked in speculative silence.
"I wonder . . ." he murmured at length. "It might be done. I say, Van, do you feel in a house-breakin' mood?"
He approached the small screened porch at the back of the house and mounted the short flight of wooden steps that led to it. The door was not latched and we stepped into the porch. There was a door leading into the lodge, and beside it a small pantry window. Both, however, were locked.
"Wait here a minute," Vance directed; and he disappeared down the porch steps into the rear yard. A few moments later he returned with a chisel from the tool-box of his car. "I have always had a suppressed urge to be a burglar," he said. "Now let's see. . . ."
He worked the flat blade of the chisel between the two small sections of the pantry window, and after a few minutes of manipulation, he succeeded in throwing the circular bolt which held them locked. Then, by inserting the chisel under the lower sash, he was able to raise it. There was an empty wooden box standing in a corner of the porch, and this Vance placed beneath the window. Standing on it, he managed, with considerable effort, to squeeze himself through the narrow opening; and a moment later I heard a heavy thump as he disappeared into the darkness inside. In another minute, however, his face appeared at the window.
"No damage done, Van," he announced. "Come along in. I'll help you through."
I pulled my hat over my ears and worked myself forward through the window. Vance took me under the shoulders and drew me into the narrow dark pantry.
"My word!" he sighed. "Burglary is far too strenuous an undertaken'. I was quite right in renouncin' the career. . . . Now we must look for the cellar door. I doubt if there will be anything to interest us on the main floors."
The cellar door was easily found. It led directly off the kitchen which was divided from the pantry by a swinging door. Vance led the way down the stairs, holding his pocket cigarette lighter before him.
"Oh, I say!" I heard his voice from the semi-darkness ahead. "That's a curious door for an innocent hunting lodge."
I was directly behind him now, at the foot of the stairs, and, looking over his shoulder, I saw through the flickering light of the cigarette lighter's tiny flame an enormous solid-oak door, comparatively new. There was neither door-knob nor lock, but where the knob would ordinarily have been was a large iron drop bolt. Vance lifted the heavy bolt and pushed the door inward. From the black depths beyond there came an acrid chemical odor and a continuous, insistent hum, as of motors; and far off in the blackness I could see several tiny shimmering blue streaks of flame, as of Bunsen burners.
Vance stepped through the doorway and fumbled around on the adjoining wall. Finally he found the electric switch. There was a click; and a brilliant illumination from a dozen or more suspended electric bulbs replaced the darkness.
An astonishing sight met my eyes. The stone cellar, though originally it must have been nearly sixty feet square, had been extended on two sides, so that we now found ourselves in an underground room at least a hundred feet wide and a hundred and twenty feet long. It was filled with rows of enormous tables covered with thousands of small circular glass jars. At the rear of the cellar was a series of electric generators; and on some of the tables and wide shelves about the walls were elaborate collections of bottles and intricate chemical paraphernalia.
Vance looked about him and moved here and there among the heavily laden tables.
"My word!" he murmured. "Doctor Taylor would be green with envy if he could see this laborat'ry. Amazin'! . . ."
He walked across the room to a series of tables whose apparatus was quite unlike the rest, and where I had seen the blue flames.
"Heavy water, Van," he explained, indicating several cone-shaped bottles at the end of a long series of tubes, valves and cells. "There must be over a quart of it here. Large-scale production, this. If it's pure, Kinkaid has a fortune in those bottles. . . . Do you see how it's made, Van? A fascinatin' process."
He looked over the apparatus closely.
"The method of production used here is the same as the one devised by the chemists at Princeton--the first one, by the by, of any real practical value. Electrolyte from commercial electrolytic cells is first distilled to remove the carbonate and hydroxide. Sodium hydroxide is added, and then the solution is electrolyzed in those cells."
He pointed to several tables far down the room, containing innumerable hydrometer jars which were cooled by immersion in large shallow tanks of running water.
"The electrodes, you can see, are bent twice at right-angles to form anode and cathode in the neighboring cells; and the potential of the direct current is supplied from those motor generators over there. It takes about three days to diminish the electrolyte to about twelve per cent of its original volume; and then this concentrated electrolyte is partially neutralized by bubbling carbon dioxide through it. After that it is distilled and added to another group of cells--those on that series of tables at the rear-- containing water of the same grade but still with the original sodium hydroxide content. Three successive electrolyses are carried out, which result in water containing about two and a half per cent of the heavy hydrogen isotope. From this stage onward the hydrogen contains the heavy isotope which is recovered by the apparatus on these tables."
He waved his hand over the elaborate chemical array in front of which we were standing.
"The mixed electrolytic gas passes from those cells at the right through this spray trap, then through this T-tube which, you observe, is immersed in mercury to form a safety valve for releasing excessive pressure; and finally it flows out through that capillary glass nozzle where it burns as a flame."
Vance dropped his cigarette to the floor and crushed it out with his toe.
"And that is the final step, Van, in the production of the world's most expensive liquid. The water formed by the combustion is condensed in this inclined quartz tube--"
There came to us the sound of soft rapid footsteps on the cellar stairs. Vance swung suddenly about and rushed forward. But he was too late. The great oak door had been drawn violently shut, and almost simultaneously the heavy iron bolt was thrown into its socket with a metallic thud.
Above the din of the motors and the flow of the running water in the shallow tanks we could distinctly hear the angry but triumphant chuckle of some one on the stairs.