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also as a short cut by clerks when coming from Charles Street。 Here is
a rough chart of the place。〃 （See illustration。）
〃Thank you。 I think that I quite follow you；〃 said Sherlock Holmes。
〃It is of the utmost importance that you should notice this point。 I
went down the stairs and into the hall； where I found the
commissionaire fast asleep in his box； with the kettle boiling
furiously upon the spirit…lamp。 I took off the kettle and blew out the
lamp； for the water was spurting over the floor。 Then I put out my
hand and was about to shake the man； who was still sleeping soundly；
when a bell over his head rang loudly； and he woke with a start。
〃'Mr。 Phelps； sir！' said he； looking at me in bewilderment。
〃'I came down to see if my coffee was ready。'
〃'I was boiling the kettle when I fell asleep； sir。' He looked at me
and then up at the still quivering bell with an ever…growing
astonishment upon his face。
〃'If you was here； sir； then who rang the bell？' he asked。
〃'The bell！' I cried。 'What bell is it？'
〃'It's the bell of the room you were working in。'
〃A cold hand seemed to close round my heart。 Someone； then； was in
that room where my precious treaty lay upon the table。 I ran
frantically up the stair and along the passage。 There was no one in
the corridors； Mr。 Holmes。 There was no one in the room。 All was
exactly as I left it； save only that the papers which had been
committed to my care had been taken from the desk on which they lay。
The copy was there； and the original was gone。〃
Holmes sat up in his chair and rubbed his hands。 I could see that
the problem was entirely to his heart。 〃Pray； what did you do then？〃
he murmured。
〃I recognized in an instant that the thief must have come up the
stairs from the side door。 Of course I must have met him if he had
come the other way。〃
〃You were satisfied that he could not have been concealed in the
room all the time； or in the corridor which you have just described
as dimly lighted？〃
〃It is absolutely impossible。 A rat could not conceal himself either
in the room or the corridor。 There is no cover at all。〃
〃Thank you。 Pray proceed。〃
〃The commissionaire； seeing by my pale face that something was to be
feared； had followed me upstairs。 Now we both rushed along the
corridor and down the steep steps which led to Charles Street。 The
door at the bottom was closed but unlocked。 We flung it open and
rushed out。 I can distinctly remember that as we did so there came
three chimes from a neighbouring clock。 It was a quarter to ten。〃
〃That is of enormous importance；〃 said Holmes； making a note upon
his shirt…cuff。
〃The night was very dark； and a thin； warm rain was falling。 There
was no one in Charles Street； but a great traffic was going on； as
usual； in Whitehall； at the extremity。 We rushed along the pavement；
bare…headed as we were； and at the far corner we found a policeman
standing。
〃'A robbery has been committed；' I gasped。 'A document of immense
value has been stolen from the Foreign Office。 Has anyone passed
this way？'
〃'I have been standing here for a quarter of an hour； sir；' said he；
'only one person has passed during that time…a woman； tall and
elderly； with a Paisley shawl。'
〃'Ah； that is only my wife；' cried the commissionaire； 'has no one
else passed？'
〃'No one。'
〃'Then it must be the other way that the thief took；' cried the
fellow； tugging at my sleeve。
〃But I was not satisfied； and the attempts which he made to draw
me away increased my suspicions。
〃'Which way did the woman go？' I cried。
〃'I don't know； sir。 I noticed her pass； but I had no special reason
for watching her。 She seemed to be in a hurry。'
〃'How long ago was it？'
〃'Oh； not very many minutes。'
〃'Within the last five？'
〃'Well； it could not have been more than five。'
〃'You're only wasting your time； sir； and every minute now is of
importance；' cried the commissionaire； 'take my word for it that my
old woman has nothing to do with it and come down to the other end
of the street。 Well； if you won't； I will。' And with that he rashed
off in the other direction。
〃'But I was after him in an instant and caught him by the sleeve。
〃'Where do you live？' said I。
〃'16 Ivy Lane； Brixton；' he answered。 'But don't let yourself be
drawn away upon a false scent； Mr。 Phelps。 Come to the other end of
the street and let us see if we can hear of anything。'
〃Nothing was to be lost by following his advice。 With the
policeman we both hurried down； but only to find the street full of
traffic； many people coming and going； but all only too eager to get
to a place of safety upon so wet a night。 There was no lounger who
could tell us who had passed。
〃Then we returned to the office and searched the stairs and the
passage without result。 The corridor which led to the room was laid
down with a kind of creamy linoleum which shows an impression very
easily。 We examined it very carefully； but found no outline of any
footmark。〃
〃Had it been raining all evening？〃
〃Since about seven。〃
〃How is it； then； that the woman who came into the room about nine
left no traces with her muddy boots？〃
〃I am glad you raised the point。 It occurred to me at the time。
The charwomen are in the habit of taking off their boots at the
commissionaire's office； and putting on list slippers。〃
〃That is very clear。 There were no marks then； though the night
was a wet one？ The chain of events is certainly one of extraordinary
interest。 What did you do next？〃
〃We examined the room also。 There is no possibility of a secret
door； and the windows are quite thirty feet from the ground。 Both of
them were fastened on the inside。 The carpet prevents any
possibility of a trapdoor； and the ceiling is of the ordinary
whitewashed kind。 I will pledge my life that whoever stole my papers
could only have come through the door。〃
〃How about the fireplace？〃
〃They use none。 There is a stove。 The bell…rope hangs from the
wire just to the right of my desk。 Whoever rang it must have come
right up to the desk to do it。 But why should any criminal wish to
ring the bell？ It is a most insoluble mystery。〃
〃Certainly the incident was unusual。 What were your next steps？
You examined the room； I presume； to see if the intruder had left
any traces…any cigar…end or dropped glove or hairpin or other trifle？〃
〃There was nothing of the sort。〃
〃No smell？〃
〃Well； we never thought of that。〃
〃Ah； a scent of tobacco would have been worth a great deal to us
in such an investigation。〃
〃I never smoke myself； so I think I should have observed it if there
had been any smell of tobacco。 There was absolutely no clue of any
kind。 The only tangible fact was that the commissionaire's wife…Mrs。
Tangey was the name…had hurried out of the place。 He could give no
explanation save that it was about the time when the woman always went
home。 The policeman and I agreed that our best plan would be to
seize the woman before she could get rid of the papers； presuming that
she had them。
〃The alarm had