duty is to report the event; and I place the event in its frame
   --that is all.  It is only natural that you should know where the
   things happened.
   I return to Monsieur Stangerson.  When he bought the estate, fifteen
   years before the tragedy with which we are engaged occurred, the
   Chateau du Glandier had for a long time been unoccupied.  Another
   old chateau in the neighbourhood, built in the fourteenth century
   by Jean de Belmont, was also abandoned, so that that part of the
   country was very little inhabited.  Some small houses on the side
   of the road leading to Corbeil, an inn, called the "Auberge du
   Donjon," which offered passing hospitality to waggoners; these
   were about all to represent civilisation in this out-of-the-way
   part of the country, but a few leagues from the capital.
   But this deserted condition of the place had been the determining
   reason for the choice made by Monsieur Stangerson and his daughter.
   Monsieur Stangerson was already celebrated.  He had returned from
   America, where his works had made a great stir.  The book which he
   had published at Philadelphia, on the "Dissociation of Matter by
   Electric Action," had aroused opposition throughout the whole
   scientific world.  Monsieur Stangerson was a Frenchman, but of
   American origin.  Important matters relating to a legacy had kept
   him for several years in the United States, where he had continued
   the work begun by him in France, whither he had returned in
   possession of a large fortune.  This fortune was a great boon to
   him; for, though he might have made millions of dollars by
   exploiting two or three of his chemical discoveries relative to
   new processes of dyeing, it was always repugnant to him to use
   for his own private gain the wonderful gift of invention he had
   received from nature.  He considered he owed it to mankind, and
   all that his genius brought into the world went, by this
   philosophical view of his duty, into the public lap.
   If he did not try to conceal his satisfaction at coming into
   possession of this fortune, which enabled him to give himself up to
   his passion for pure science, he had equally to rejoice, it seemed
   to him, for another cause.  Mademoiselle Stangerson was, at the time
   when her father returned from America and bought the Glandier estate,
   twenty years of age.  She was exceedingly pretty, having at once the
   Parisian grace of her mother, who had died in giving her birth, and
   all the splendour, all the riches of the young American blood of her
   parental grandfather, William Stangerson.  A citizen of Philadelphia,
   William Stangerson had been obliged to become naturalised in
   obedience to family exigencies at the time of his marriage with a
   French lady, she who was to be the mother of the illustrious
   Stangerson.  In that way the professor's French nationality is
   accounted for.
   Twenty years of age, a charming blonde, with blue eyes, milk-white
   complexion, and radiant with divine health, Mathilde Stangerson was
   one of the most beautiful marriageable girls in either the old or
   the new world.  It was her father's duty, in spite of the inevitable
   pain which a separation from her would cause him, to think of her
   marriage; and he was fully prepared for it.  Nevertheless, he
   buried himself and his child at the Glandier at the moment when his
   friends were expecting him to bring her out into society.  Some of
   them expressed their astonishment, and to their questions he
   answered: "It is my daughter's wish.  I can refuse her nothing.
   She has chosen the Glandier."
   Interrogated in her turn, the young girl replied calmly: "Where
   could we work better than in this solitude?"  For Mademoiselle
   Stangerson had already begun to collaborate with her father in his
   work.  It could not at the time be imagined that her passion for
   science would lead her so far as to refuse all the suitors who
   presented themselves to her for over fifteen years.  So secluded was
   the life led by the two, father and daughter, that they showed
   themselves only at a few official receptions and, at certain times
   in the year, in two or three friendly drawing-rooms, where the fame
   of the professor and the beauty of Mathilde made a sensation.  The
   young girl's extreme reserve did not at first discourage suitors;
   but at the end of a few years, they tired of their quest.
   One alone persisted with tender tenacity and deserved the name of
   "eternal fiance," a name he accepted with melancholy resignation;
   that was Monsieur Robert Darzac.  Mademoiselle Stangerson was now
   no longer young, and it seemed that, having found no reason for
   marrying at five-and-thirty, she would never find one.  But such an
   argument evidently found no acceptance with Monsieur Robert Darzac.
   He continued to pay his court--if the delicate and tender attention
   with which he ceaselessly surrounded this woman of five-and-thirty
   could be called courtship--in face of her declared intention never
   to marry.
   Suddenly, some weeks before the events with which we are occupied,
   a report--to which nobody attached any importance, so incredible
   did it sound--was spread about Paris, that Mademoiselle Stangerson
   had at last consented to "crown" the inextinguishable flame of
   Monsieur Robert Darzac!  It needed that Monsieur Robert Darzac
   himself should not deny this matrimonial rumour to give it an
   appearance of truth, so unlikely did it seem to be well founded.
   One day, however, Monsieur Stangerson, as he was leaving the Academy
   of Science, announced that the marriage of his daughter and Monsieur
   Robert Darzac would be celebrated in the privacy of the Chateau du
   Glandier, as soon as he and his daughter had put the finishing
   touches to their report summing up their labours on the "Dissociation
   of Matter."  The new household would install itself in the Glandier,
   and the son-in-law would lend his assistance in the work to which
   the father and daughter had dedicated their lives.
   The scientific world had barely had time to recover from the effect
   of this news, when it learned of the attempted assassination of
   Mademoiselle under the extraordinary conditions which we have
   detailed and which our visit to the chateau was to enable us to
   ascertain with yet greater precision.  I have not hesitated to
   furnish the reader with all these retrospective details, known to
   me through my business relations with Monsieur Robert Darzac.  On
   crossing the threshold of The Yellow Room he was as well posted
   as I was.
   CHAPTER V
   In Which Joseph Rouletabille Makes a Remark to Monsieur Robert
   Darzac Which Produces Its Little Effect
   Rouletabille and I had been walking for several minutes, by the side
   of a long wall bounding the vast property of Monsieur Stangerson and
   had already come within sight of the entrance gate, when our
   attention was drawn to an individual who, half bent to the ground,
   seemed to be so completely absorbed in what he was doing as not to
   have seen us coming towards him.  At one time he stooped so low as
					     					 			/>   almost to touch the ground; at another he drew himself up and
   attentively examined the wall; then he looked into the palm of one
   of his hands, and walked away with rapid strides.  Finally he set
   off running, still looking into the palm of his hand.  Rouletabille
   had brought me to a standstill by a gesture.
   "Hush!  Frederic Larsan is at work!  Don't let us disturb him!"
   Rouletabille had a great admiration for the celebrated detective.
   I had never before seen him, but I knew him well by reputation.
   At that time, before Rouletabille had given proof of his unique
   talent, Larsan was reputed as the most skilful unraveller of the
   most mysterious and complicated crimes.  His reputation was
   world-wide, and the police of London, and even of America, often
   called him in to their aid when their own national inspectors and
   detectives found themselves at the end of their wits and resources.
   No one was astonished, then, that the head of the Surete had, at the
   outset of the mystery of The Yellow Room, telegraphed his precious
   subordinate to London, where he had been sent on a big case of
   stolen securities, to return with all haste.  Frederic who, at the
   Surete, was called the "great Frederic," had made all speed,
   doubtless knowing by experience that, if he was interrupted in what
   he was doing, it was because his services were urgently needed in
   another direction; so, as Rouletabille said, he was that morning
   already "at work."  We soon found out in what it consisted.
   What he was continually looking at in the palm of his right hand
   was nothing but his watch, the minute hand of which he appeared
   to be noting intently.  Then he turned back still running, stopping
   only when he reached the park gate, where he again consulted his
   watch and then put it away in his pocket, shrugging his shoulders
   with a gesture of discouragement.  He pushed open the park gate,
   reclosed and locked it, raised his head and, through the bars,
   perceived us.  Rouletabille rushed after him, and I followed.
   Frederic Larsan waited for us.
   "Monsieur Fred," said Rouletabille, raising his hat and showing the
   profound respect, based on admiration, which the young reporter felt
   for the celebrated detective, "can you tell me whether Monsieur
   Robert Darzac is at the chateau at this moment?  Here is one of his
   friends, of the Paris Bar, who desires to speak with him."
   "I really don't know, Monsieur Rouletabille," replied Fred, shaking
   hands with my friend, whom he had several times met in the course
   of his difficult investigations.  "I have not seen him."
   "The concierges will be able to inform us no doubt?" said
   Rouletabille, pointing to the lodge the door and windows of which
   were close shut.
   "The concierges will not be able to give you any information,
   Monsieur Rouletabille."
   "Why not?"
   "Because they were arrested half an hour ago."
   "Arrested!" cried Rouletabille; "then they are the murderers!"
   Frederic Larsan shrugged his shoulders.
   "When you can't arrest the real murderer," he said with an air of
   supreme irony, "you can always indulge in the luxury of discovering
   accomplices."
   "Did you have them arrested, Monsieur Fred?"
   "Not I!--I haven't had them arrested.  In the first place, I am
   pretty sure that they have not had anything to do with the affair,
   and then because--"
   "Because of what?" asked Rouletabille eagerly.
   "Because of nothing," said Larsan, shaking his head.
   "Because there were no accomplices!" said Rouletabille.
   "Aha!--you have an idea, then, about this matter?" said Larsan,
   looking at Rouletabille intently, "yet you have seen nothing, young
   man--you have not yet gained admission here!"
   "I shall get admission."
   "I doubt it.  The orders are strict."
   "I shall gain admission, if you let me see Monsieur Robert Darzac.
   Do that for me.  You know we are old friends.  I beg of you,
   Monsieur Fred.  Do you remember the article I wrote about you on
   the gold bar case?"
   The face of Rouletabille at the moment was really funny to look at.
   It showed such an irresistible desire to cross the threshold beyond
   which some prodigious mystery had occurred; it appealed with so much
   eloquence, not only of the mouth and eyes, but with all its features,
   that I could not refrain from bursting into laughter.  Frederic
   Larsan, no more than myself, could retain his gravity.  Meanwhile,
   standing on the other side of the gate, he calmly put the key in
   his pocket.  I closely scrutinised him.
   He might be about fifty years of age.  He had a fine head, his hair
   turning grey; a colourless complexion, and a firm profile.  His
   forehead was prominent, his chin and cheeks clean shaven.  His upper
   lip, without moustache, was finely chiselled.  His eyes were rather
   small and round, with a look in them that was at once searching and
   disquieting.  He was of middle height and well built, with a general
   bearing elegant and gentlemanly.  There was nothing about him of
   the vulgar policeman.  In his way, he was an artist, and one felt
   that he had a high opinion of himself.  The sceptical tone of his
   conversation was that of a man who had been taught by experience.
   His strange profession had brought him into contact with so many
   crimes and villanies that it would have been remarkable if his
   nature had not been a little hardened.
   Larsan turned his head at the sound of a vehicle which had come from
   the chateau and reached the gate behind him.  We recognised the cab
   which had conveyed the examining magistrate and his Registrar from
   the station at Epinay.
   "Ah!" said Frederic Larsan, "if you want to speak with Monsieur
   Robert Darzac, he is here."
   The cab was already at the park gate and Robert Darzac was begging
   Frederic Larsan to open it for him, explaining that he was pressed
   for time to catch the next train leaving Epinay for Paris.  Then he
   recognised me.  While Larsan was unlocking the gate, Monsieur Darzac
   inquired what had brought me to the Glandier at such a tragic moment.
   I noticed that he was frightfully pale, and that his face was lined
   as if from the effects of some terrible suffering.
   "Is Mademoiselle getting better?" I immediately asked.
   "Yes," he said.  "She will be saved perhaps.  She must be saved!"
   He did not add "or it will be my death"; but I felt that the phrase
   trembled on his pale lips.
   Rouletabille intervened:
   "You are in a hurry, Monsieur; but I must speak with you.  I have
   something of the greatest importance to tell you."
   Frederic Larsan interrupted:
   "May I leave you?" he asked of Robert Darzac.  "Have you a key, or
   do you wish me to give you this one."
   "Thank you.  I have a key and will lock the gate."
   Larsan hurried off in the direction of the chateau, the imposing
   pile of which could be perceived a few hundred yards away.
   Robert Darzac, with knit brow, was beginning to show impatience.  I
   presented Rouletabille as a good friend 
					     					 			 of mine, but, as soon as he
   learnt that the young man was a journalist, he looked at me very
   reproachfully, excused himself, under the necessity of having to
   reach Epinay in twenty minutes, bowed, and whipped up his horse.
   But Rouletabille had seized the bridle and, to my utter astonishment,
   stopped the carriage with a vigorous hand.  Then he gave utterance
   to a sentence which was utterly meaningless to me.
   "The presbytery has lost nothing of its charm, nor the garden its
   brightness."
   The words had no sooner left the lips of Rouletabille than I saw
   Robert Darzac quail.  Pale as he was, he became paler.  His eyes
   were fixed on the young man in terror, and he immediately
   descended from the vehicle in an inexpressible state of agitation.
   "Come!--come in!" he stammered.
   Then, suddenly, and with a sort of fury, he repeated:
   "Let us go, monsieur."
   He turned up by the road he had come from the chateau, Rouletabille
   still retaining his hold on the horse's bridle.  I addressed a few
   words to Monsieur Darzac, but he made no answer.  My looks
   questioned Rouletabille, but his gaze was elsewhere.
   CHAPTER VI
   In the Heart of the Oak Grove
   We reached the chateau, and, as we approached it, saw four
   gendarmes pacing in front of a little door in the ground floor of
   the donjon.  We soon learned that in this ground floor, which had
   formerly served as a prison, Monsieur and Madame Bernier, the
   concierges, were confined.  Monsieur Robert Darzac led us into the
   modern part of the chateau by a large door, protected by a
   projecting awning--a "marquise" as it is called.  Rouletabille,
   who had resigned the horse and the cab to the care of a servant,
   never took his eyes off Monsieur Darzac.  I followed his look and
   perceived that it was directed solely towards the gloved hands of
   the Sorbonne professor.  When we were in a tiny sitting-room
   fitted with old furniture, Monsieur Darzac turned to Rouletabille
   and said sharply:
   "What do you want?"
   The reporter answered in an equally sharp tone:
   "To shake you by the hand."
   Darzac shrank back.
   "What does that mean?"
   Evidently he understood, what I also understood, that my friend
   suspected him of the abominable attempt on the life of
   Mademoiselle Stangerson.  The impression of the blood-stained hand
   on the walls of The Yellow Room was in his mind.  I looked at the
   man closely.  His haughty face with its expression ordinarily so
   straightforward was at this moment strangely troubled.  He held out
   his right hand and, referring to me, said:
   "As you are a friend of Monsieur Sainclair who has rendered me
   invaluable services in a just cause, monsieur, I see no reason for
   refusing you my hand--"
   Rouletabille did not take the extended hand.  Lying with the utmost
   audacity, he said:
   "Monsieur, I have lived several years in Russia, where I have
   acquired the habit of never taking any but an ungloved hand."
   I thought that the Sorbonne professor would express his anger openly,
   but, on the contrary, by a visibly violent effort, he calmed himself,
   took off his gloves, and showed his hands; they were unmarked by any
   cicatrix.
   "Are you satisfied?"
   "No!" replied Rouletabille.  "My dear friend," he said, turning
   to me, "I am obliged to ask you to leave us alone for a moment."
   I bowed and retired; stupefied by what I had seen and heard.  I
   could not understand why Monsieur Robert Darzac had not already
   shown the door to my impertinent, insulting, and stupid friend.
   I was angry myself with Rouletabille at that moment, for his
   suspicions, which had led to this scene of the gloves.
   For some twenty minutes I walked about in front of the chateau,