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there as fast as I could."
"
Will you relate to us exactly what happened next?"
"I entered Mrs. Inglethorp's room. She was at that moment in a typical
tetanic convulsion. She turned towards me, and gasped out: 'Alfred--Alfred--
--'"
"Could the strychnine have been administered in Mrs. Inglethorp's after-
dinner coffee which was taken to her by her husband?"
"Possibly, but strychnine is a fairly rapid drug in its action. The symptoms
appear from one to two hours after it has been swallowed. It is retarded
under certain conditions, none of which, however, appear to have been
present in this case. I presume Mrs. Inglethorp took the coffee after dinner
about eight o'clock, whereas the symptoms did not manifest themselves
until the early hours of the morning, which, on the face of it, points to the
drug having been taken much later in the evening."
"
Mrs. Inglethorp was in the habit of drinking a cup of coco in the middle of
the night. Could the strychnine have been administered in that?"
"No, I myself took a sample of the coco remaining in the saucepan and had it
analysed. There was no strychnine present."
I heard Poirot chuckle softly beside me.
"
"
"
How did you know?" I whispered.
Listen."
I should say"--the doctor was continuing--"that I would have been
considerably surprised at any other result."
"
"
Why?"
Simply because strychnine has an unusually bitter taste. It can be detected
in a solution of 1 in 70,000, and can only be disguised by some strongly
flavoured substance. Coco would be quite powerless to mask it."
One of the jury wanted to know if the same objection applied to coffee.
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