Читать книгу Agatha Christie: The Collection. The Mysterious Affair at Styles, Poirot Investigates, The Murder on the Links, The Secret Adversary, The Man in the Brown Suit онлайн

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“‘The following prescription has become famous in text books:

Strychninae Sulph … 1 gr.

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 lunched away from home, so that the last — and fatal — dose was actually taken twenty-four hours later than had been anticipated by the murderer; and it is owing to that delay that the final proof — the last link of the chain — is now in my hands.”