kill Mademoiselle Stangerson's murderer?  No, I had not.  But let
   him only give me the chance!  Let me find out whether he is really
   a creature of flesh and blood!--Let me see his dead body, since
   it cannot be taken alive.
   "If I could but make this woman, who does not even look at us,
   understand!  She is absorbed by her fears and by her father's
   distress of mind.  And I can do nothing to save her.  Yes, I will
   go to work once more and accomplish wonders.
   "I move towards her.  I would speak to her.  I would entreat her
   to have confidence in me.  I would, in a word, make her understand
   --she alone--that I know how the murderer escaped from The Yellow
   Room--that I have guessed the motives for her secrecy--and that I
   pity her with all my heart.  But by her gestures she begged us to
   leave her alone, expressing weariness and the need for immediate
   rest.  Monsieur Stangerson asked us to go back to our rooms and
   thanked us.  Frederic Larsan and I bowed to him and, followed by
   Daddy Jacques, we regained the gallery.  I heard Larsan murmur:
   'Strange!  strange!' He made a sign to me to go with him into his
   room.  On the threshold he turned towards Daddy Jacques.
   "'Did you see him distinctly?' he asked.
   "'Who?'
   "'The man?'
   "'Saw him!--why, he had a big red beard and red hair.'
   "'That's how he appeared to me,' I said.
   "'And to me,' said Larsan.
   "The great Fred and I were alone in his chamber, now, to talk over
   this thing.  We talked for an hour, turning the matter over and
   viewing it from every side.  From the questions put by him, from
   the explanation which he gives me, it is clear to me that--in spite
   of all our senses--he is persuaded the man disappeared by some
   secret passage in the chateau known to him alone.
   "'He knows the chateau,' he said to me; 'he knows it well.'
   "'He is a rather tall man--well-built,' I suggested.
   "'He is as tall as he wants to be,' murmured Fred.
   "'I understand,' I said; 'but how do you account for his red hair
   and beard?'
   "'Too much beard--too much hair--false,' says Fred.
   "'That's easily said.  You are always thinking of Robert Darzac.
   You can't get rid of that idea?  I am certain that he is innocent.'
   "'So much the better.  I hope so; but everything condemns him.  Did
   you notice the marks on the carpet?--Come and look at them.'
   "'I have seen them; they are the marks of the neat boots, the same
   as those we saw on the border of the lake.'
   "'Can you deny that they belong to Robert Darzac?'
   "'Of course, one may be mistaken.'
   "'Have you noticed that those footprints only go in one direction?
   --that there are no return marks?  When the man came from the
   chamber, pursued by all of us, his footsteps left no traces behind
   them.'
   "'He had, perhaps, been in the chamber for hours.  The mud from his
   boots had dried, and he moved with such rapidity on the points of
   his toes--We saw him running, but we did not hear his steps.'
   "I suddenly put an end to this idle chatter--void of any logic, and
   made a sign to Larsan to listen.
   "'There--below; some one is shutting a door.'
   "I rise; Larsan follows me; we descend to the ground-floor of the
   chateau.  I lead him to the little semi-circular room under the
   terrace beneath the window of the 'off-turning' gallery.  I point
   to the door, now closed, open a short time before, under which a
   shaft of light is visible.
   "'The forest-keeper!' says Fred.
   "'Come on!' I whisper.
   "Prepared--I know not why--to believe that the keeper is the
   guilty man--I go to the door and rap smartly on it.  Some might
   think that we were rather late in thinking of the keeper, since our
   first business, after having found that the murderer had escaped us
   in the gallery, ought to have been to search everywhere else,
   --around the chateau,--in the park--
   "Had this criticism been made at the time, we could only have
   answered that the assassin had disappeared from the gallery in such
   a way that we thought he was no longer anywhere!  He had eluded us
   when we all had our hands stretched out ready to seize him--when
   we were almost touching him.  We had no longer any ground for hoping
   that we could clear up the mystery of that night.
   "As soon as I rapped at the door it was opened, and the keeper
   asked us quietly what we wanted.  He was undressed and preparing
   to go to bed.  The bed had not yet been disturbed.
   "We entered and I affected surprise.
   "'Not gone to bed yet?'
   "'No,' he replied roughly.  'I have been making a round of the park
   and in the woods.  I am only just back--and sleepy.  Good-night!'
   "'Listen,' I said.  'An hour or so ago, there was a ladder close by
   your window.'
   "'What ladder?--I did not see any ladder.  Good-night!'
   "And he simply put us out of the room.  When we were outside I
   looked at Larsan.  His face was impenetrable.
   "'Well?' I said.
   "'Well?' he repeated.
   "'Does that open out any new view to you?'
   "There was no mistaking Larsan's bad temper.  On re-entering the
   chateau, I heard him mutter:
   "'It would be strange--very strange--if I had deceived myself on
   that point!'
   "He seemed to be talking to me rather than to himself.  He added:
   'In any case, we shall soon know what to think.  The morning will
   bring light with it.'"
   CHAPTER XVIII
   Rouletabille Has Drawn a Circle Between the Two Bumps on His Forehead
   (EXTRACT FROM THE NOTE-BOOK OF JOSEPH ROULETABILLE, continued)
   "We separated on the thresholds of our rooms, with a melancholy
   shake of the hands.  I was glad to have aroused in him a suspicion
   of error.  His was an original brain, very intelligent but--without
   method.  I did not go to bed.  I awaited the coming of daylight and
   then went down to the front of the chateau, and made a detour,
   examining every trace of footsteps coming towards it or going from
   it.  These, however, were so mixed and confusing that I could make
   nothing of them.  Here I may make a remark,--I am not accustomed
   to attach an exaggerated importance to exterior signs left in the
   track of a crime.
   "The method which traces the criminal by means of the tracks of his
   footsteps is altogether primitive.  So many footprints are identical.
   However, in the disturbed state of my mind, I did go into the
   deserted court and did look at all the footprints I could find there,
   seeking for some indication, as a basis for reasoning.
   "If I could but find a right starting-point!  In despair I seated
   myself on a stone.  For over an hour I busied myself with the common,
   ordinary work of a policeman.  Like the least intelligent of
   detectives I went on blindly over the traces of footprints which
   told me just no more than they could.
   "I came to the conclusion that I was a fool, lower in the scale of
   intelligence than even the police of the modern romancer.  Novelists
   build mountains of stupidity out of 
					     					 			 a footprint on the sand, or from
   an impression of a hand on the wall.  That's the way innocent men
   are brought to prison.  It might convince an examining magistrate or
   the head of a detective department, but it's not proof.  You writers
   forget that what the senses furnish is not proof.  If I am taking
   cognisance of what is offered me by my senses I do so but to bring
   the results within the circle of my reason.  That circle may be the
   most circumscribed, but if it is, it has this advantage--it holds
   nothing but the truth!  Yes, I swear that I have never used the
   evidence of the senses but as servants to my reason.  I have never
   permitted them to become my master.  They have not made of me that
   monstrous thing,--worse than a blind man,--a man who sees falsely.
   And that is why I can triumph over your error and your merely animal
   intelligence, Frederic Larsan.
   "Be of good courage, then, friend Rouletabille; it is impossible
   that the incident of the inexplicable gallery should be outside the
   circle of your reason.  You know that!  Then have faith and take
   thought with yourself and forget not that you took hold of the right
   end when you drew that circle in your brain within which to unravel
   this mysterious play of circumstance.
   "To it, once again!  Go--back to the gallery.  Take your stand on
   your reason and rest there as Frederic Larsan rests on his cane.
   You will then soon prove that the great Fred is nothing but a fool.
   --30th October. Noon.
                                                 JOSEPH ROULETABILLE."
   "I acted as I planned.  With head on fire, I retraced my way to the
   gallery, and without having found anything more than I had seen on
   the previous night, the right hold I had taken of my reason drew me
   to something so important that I was obliged to cling to it to save
   myself from falling.
   "Now for the strength and patience to find sensible traces to fit
   in with my thinking--and these must come within the circle I have
   drawn between the two bumps on my forehead!
   --30th of October.  Midnight."
                                                 "JOSEPH ROULETABILLE."
   CHAPTER XIX
   Rouletabille Invites Me to Breakfast at the Donjon Inn
   It was not until later that Rouletabille sent me the note-book in
   which he had written at length the story of the phenomenon of the
   inexplicable gallery.  On the day I arrived at the Glandier and
   joined him in his room, he recounted to me, with the greatest
   detail, all that I have now related, telling me also how he had
   spent several hours in Paris where he had learned nothing that could
   be of any help to him.
   The event of the inexplicable gallery had occurred on the night
   between the 29th and 30th of October, that is to say, three days
   before my return to the chateau.  It was on the 2nd of November,
   then, that I went back to the Glandier, summoned there by my
   friend's telegram, and taking the revolvers with me.
   I am now in Rouletabille's room and he has finished his recital.
   While he had been telling me the story I noticed him continually
   rubbing the glass of the eyeglasses he had found on the side table.
   From the evident pleasure he was taking in handling them I felt
   they must be one of those sensible evidences destined to enter what
   he had called the circle of the right end of his reason.  That
   strange and unique way of his, to express himself in terms
   wonderfully adequate for his thoughts, no longer surprised me.
   It was often necessary to know his thought to understand the terms
   he used; and it was not easy to penetrate into Rouletabille's
   thinking.
   This lad's brain was one of the most curious things I have ever
   observed.  Rouletabille went on the even tenor of his way without
   suspecting the astonishment and even bewilderment he roused in
   others.  I am sure he was not himself in the least conscious of
   the originality of his genius.  He was himself and at ease wherever
   he happened to be.
   When he had finished his recital he asked me what I thought of it.
   I replied that I was much puzzled by his question.  Then he begged
   me to try, in my turn, to take my reason in hand "by the right end."
   "Very well," I said.  "It seems to me that the point of departure
   of my reason would be this--there can be no doubt that the murderer
   you pursued was in the gallery." I paused.
   "After making so good a start, you ought not to stop so soon," he
   exclaimed.  "Come, make another effort."
   "I'll try.  Since he disappeared from the gallery without passing
   through any door or window, he must have escaped by some other
   opening."
   Rouletabille looked at me pityingly, smiled carelessly, and remarked
   that I was reasoning like a postman, or--like Frederic Larsan.
   Rouletabille had alternate fits of admiration and disdain for the
   great Fred.  It all depended as to whether Larsan's discoveries
   tallied with Rouletabille's reasoning or not.  When they did he
   would exclaim: "He is really great!"  When they did not he would
   grunt and mutter, "What an ass!" It was a petty side of the noble
   character of this strange youth.
   We had risen, and he led me into the park.  When we reached the
   court and were making towards the gate, the sound of blinds thrown
   back against the wall made us turn our heads, and we saw, at a
   window on the first floor of the chateau, the ruddy and clean shaven
   face of a person I did not recognise.
   "Hullo!" muttered Rouletabille.  "Arthur Rance!"--He lowered his
   head, quickened his pace, and I heard him ask himself between his
   teeth: "Was he in the chateau that night?  What is he doing here?"
   We had gone some distance from the chateau when I asked him who
   this Arthur Rance was, and how he had come to know him.  He referred
   to his story of that morning and I remembered that Mr. Arthur W.
   Rance was the American from Philadelphia with whom he had had so
   many drinks at the Elysee reception.
   "But was he not to have left France almost immediately?" I asked.
   "No doubt; that's why I am surprised to find him here still, and
   not only in France, but above all, at the Glandier.  He did not
   arrive this morning; and he did not get here last night.  He must
   have got here before dinner, then.  Why didn't the concierges
   tell me?"
   I reminded my friend, apropos of the concierges, that he had not
   yet told me what had led him to get them set at liberty.
   We were close to their lodge.  Monsieur and Madame Bernier saw us
   coming.  A frank smile lit up their happy faces.  They seemed to
   harbour no ill-feeling because of their detention.  My young
   friend asked them at what hour Mr. Arthur Rance had arrived.  They
   answered that they did not know he was at the chateau.  He must have
   come during the evening of the previous night, but they had not had
   to open the gate for him, because, being a great walker, and not
   wishing that a carriage should be sent to meet him, he was accustomed
   to get off at the little hamlet of Saint-Miche 
					     					 			l, from which he came
   to the chateau by way of the forest.  He reached the park by the
   grotto of Sainte-Genevieve, over the little gate of which, giving
   on to the park, he climbed.
   As the concierges spoke, I saw Rouletabille's face cloud over and
   exhibit disappointment--a disappointment, no doubt, with himself.
   Evidently he was a little vexed, after having worked so much on the
   spot, with so minute a study of the people and events at the Glandier,
   that he had to learn now that Arthur Rance was accustomed to visit
   the chateau.
   "You say that Monsieur Arthur Rance is accustomed to come to the
   chateau.  When did he come here last?"
   "We can't tell you exactly," replied Madame Bernier--that was the
   name of the concierge--"we couldn't know while they were keeping
   us in prison.  Besides, as the gentleman comes to the chateau
   without passing through our gate he goes away by the way he comes."
   "Do you know when he came the first time?"
   "Oh yes, Monsieur!--nine years ago."
   "He was in France nine years ago, then," said Rouletabille, "and,
   since that time, as far as you know, how many times has he been at
   the Glandier?"
   "Three times."
   "When did he come the last time, as far as you know?"
   "A week before the attempt in The Yellow Room."
   Rouletabille put another question--this time addressing himself
   particularly to the woman:
   "In the grove of the parquet?"
   "In the grove of the parquet," she replied.
   "Thanks!" said Rouletabille.  "Be ready for me this evening."
   He spoke the last words with a finger on his lips as if to command
   silence and discretion.
   We left the park and took the way to the Donjon Inn.
   "Do you often eat here?"
   "Sometimes."
   "But you also take your meals at the chateau?"
   "Yes, Larsan and I are sometimes served in one of our rooms."
   "Hasn't Monsieur Stangerson ever invited you to his own table?"
   "Never."
   "Does your presence at the chateau displease him?"
   "I don't know; but, in any case, he does not make us feel that we
   are in his way."
   "Doesn't he question you?"
   "Never.  He is in the same state of mind as he was in at the door
   of The Yellow Room when his daughter was being murdered, and when
   he broke open the door and did not find the murderer.  He is
   persuaded, since he could discover nothing, that there's no reason
   why we should be able to discover more than he did.  But he has made
   it his duty, since Larsan expressed his theory, not to oppose us."
   Rouletabille buried himself in thought again for some time.  He
   aroused himself later to tell me of how he came to set the two
   concierges free.
   "I went recently to see Monsieur Stangerson, and took with me a
   piece of paper on which was written: 'I promise, whatever others
   may say, to keep in my service my two faithful servants, Bernier
   and his wife.'  I explained to him that, by signing that document,
   he would enable me to compel those two people to speak out; and I
   declared my own assurance of their innocence of any part in the
   crime.  That was also his opinion.  The examining magistrate, after
   it was signed, presented the document to the Berniers, who then did
   speak.  They said, what I was certain they would say, as soon as
   they were sure they would not lose their place.
   "They confessed to poaching on Monsieur Stangerson's estates, and
   it was while they were poaching, on the night of the crime, that
   they were found not far from the pavilion at the moment when the
   outrage was being committed.  Some rabbits they caught in that way