the mysterious affair at styles(斯代尔斯的怪事)-第38部分
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she unbolted the door leading into Mademoiselle Cynthia's room。
Possibly she applied oil to the hinges； for I found that it opened quite
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noiselessly when I tried it。 She put off her project until the early hours of
the morning as being safer； since the servants were accustomed to hearing
her move about her room at that time。 She dressed completely in her
land kit； and made her way quietly through Mademoiselle Cynthia's room
into that of Mrs。 Inglethorp。〃
He paused a moment； and Cynthia interrupted：
〃But I should have woken up if anyone had come through my room？〃
〃Not if you were drugged； mademoiselle。〃
〃Drugged？〃
〃Mais； oui！〃
〃You remember〃he addressed us collectively again〃that through all
the tumult and noise next door Mademoiselle Cynthia slept。 That
admitted of two possibilities。 Either her sleep was feignedwhich I did
not believeor her unconsciousness was indeed by artificial means。
〃With this latter idea in my mind； I examined all the coffee…cups most
carefully； remembering that it was Mrs。 Cavendish who had brought
Mademoiselle Cynthia her coffee the night before。 I took a sample from
each cup； and had them analysedwith no result。 I had counted the cups
carefully； in the event of one having been removed。 Six persons had
taken coffee； and six cups were duly found。 I had to confess myself
mistaken。
〃Then I discovered that I had been guilty of a very grave oversight。
Coffee had been brought in for seven persons； not six； for Dr。 Bauerstein
had been there that evening。 This changed the face of the whole affair；
for there was now one cup missing。 The servants noticed nothing； since
Annie； the housemaid； who took in the coffee； brought in seven cups； not
knowing that Mr。 Inglethorp never drank it； whereas Dorcas； who cleared
them away the following morning； found six as usualor strictly speaking
she found five； the sixth being the one found broken in Mrs。 Inglethorp's
room。
〃I was confident that the missing cup was that of Mademoiselle
Cynthia。 I had an additional reason for that belief in the fact that all the
cups found contained sugar； which Mademoiselle Cynthia never took in
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her coffee。 My attention was attracted by the story of Annie about some
'salt' on the tray of coco which she took every night to Mrs。 Inglethorp's
room。 I accordingly secured a sample of that coco； and sent it to be
analysed。〃
〃But that had already been done by Dr。 Bauerstein；〃 said Lawrence
quickly。
〃Not exactly。 The analyst was asked by him to report whether
strychnine was； or was not； present。 He did not have it tested； as I did；
for a narcotic。〃
〃For a narcotic？〃
〃Yes。 Here is the analyst's report。 Mrs。 Cavendish administered a
safe； but effectual； narcotic to both Mrs。 Inglethorp and Mademoiselle
Cynthia。 And it is possible that she had a mauvais quart d'heure in
consequence！ Imagine her feelings when her mother…in…law is suddenly
taken ill and dies； and immediately after she hears the word 'Poison'！ She
has believed that the sleeping draught she administered was perfectly
harmless； but there is no doubt that for one terrible moment she must have
feared that Mrs。 Inglethorp's death lay at her door。 She is seized with
panic； and under its influence she hurries downstairs； and quickly drops
the coffee…cup and saucer used by Mademoiselle Cynthia into a large brass
vase； where it is discovered later by Monsieur Lawrence。 The remains of
the coco she dare not touch。 Too many eyes are upon her。 Guess at her
relief when strychnine is mentioned； and she discovers that after all the
tragedy is not her doing。
〃We are now able to account for the symptoms of strychnine poisoning
being so long in making their appearance。 A narcotic taken with
strychnine will delay the action of the poison for some hours。〃
Poirot paused。 Mary looked up at him； the colour slowly rising in her
face。
〃All you have said is quite true； Monsieur Poirot。 It was the most
awful hour of my life。 I shall never forget it。 But you are wonderful。
I understand now〃
〃What I meant when I told you that you could safely confess to Papa
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Poirot； eh？ But you would not trust me。〃
〃I see everything now；〃 said Lawrence。 〃The drugged coco； taken on
top of the poisoned coffee； amply accounts for the delay。〃
〃Exactly。 But was the coffee poisoned； or was it not？ We come to a
little difficulty here； since Mrs。 Inglethorp never drank it。〃
〃What？〃 The cry of surprise was universal。
〃No。 You will remember my speaking of a stain on the carpet in Mrs。
Inglethorp's room？ There were some peculiar points about that stain。 It
was still damp； it exhaled a strong odour of coffee； and imbedded in the
nap of the carpet I found some little splinters of china。 What had
happened was plain to me； for not two minutes before I had placed my
little case on the table near the window； and the table； tilting up； had
deposited it upon the floor on precisely the identical spot。 In exactly the
same way； Mrs。 Inglethorp had laid down her cup of coffee on reaching
her room the night before； and the treacherous table had played her the
same trick。
〃What happened next is mere guess work on my part； but I should say
that Mrs。 Inglethorp picked up the broken cup and placed it on the table by
the bed。 Feeling in need of a stimulant of some kind； she heated up her
coco； and drank it off then and there。 Now we are faced with a new
problem。 We know the coco contained no strychnine。 The coffee was
never drunk。 Yet the strychnine must have been administered between
seven and nine o'clock that evening。 What third medium was therea
medium so suitable for disguising the taste of strychnine that it is
extraordinary no one has thought of it？〃 Poirot looked round the room； and
then answered himself impressively。 〃Her medicine！〃
〃Do you mean that the murderer introduced the strychnine into her
tonic？〃 I cried。
〃There was no need to introduce it。 It was already there in the
mixture。 The strychnine that killed Mrs。 Inglethorp was the identical
strychnine prescribed by Dr。 Wilkins。 To make that clear to you； I will
read you an extract from a book on dispensing which I found in the
Dispensary of the Red Cross Hospital at Tadminster：
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〃 'The following prescription has become famous in text books：
Strychninae Sulph 。 。 。 。 。 。 gr。I Potass
Bromide 。 。 。 。 。 。 。 3vi Aqua
ad 。 。 。 。 。 。 。 。 。 。 。 3viii Fiat Mistura
This solution deposits in a few hours the greater part of the strychnine
salt as an insoluble bromide in transparent crystals。 A lady in England
lost her life by taking a similar mixture： the precipitated strychnine
collected at the bottom； and in taking the last dose she swallowed nearly
all of it！〃
〃Now there was； of course； no bromide in Dr。 Wilkins' prescription；
but you will remember that I mentioned an empty box of bromide powders。
One or two of those powders introduced into the full bottle of medicine
would effectually precipitate the strychnine； as the book describes； and
cause it to be taken in the last dose。 You will learn later that the person
who usually poured out Mrs。 Inglethorp's medicine was always extremely
careful not to shake the bottle； but to leave the sediment at the bottom of it
undisturbed。
〃Throughout the case； there have been evidences that the tragedy was
intended to take place on Monday evening。 On that day； Mrs。
Inglethorp's bell wire was neatly cut； and on Monday evening
Mademoiselle Cynthia was spending the night with friends； so that Mrs。
Inglethorp would have been quite alone in the right wing； completely shut
off from help of any kind； and would have died； in all probability； before
medical aid could have been summoned。 But in her hurry to be in time
for the village entertainment Mrs。 Inglethorp forgot to take her medicine；
and the next day she lunc
