of sugar contained a very large dose of the poison. If the sugar had been dissolved in your tea, the quantity that you drank would have contained enough aconitine to lay you out within a few minutes; which would account for Mrs. Schallibaum's anxiety to get clear of the premises. She saw you drink from the cup, but I imagine she had not seen you turn the sugar out."
"No, I should say not, to judge by her expression. She looked terrified. She is not as hardened as her rascally companion."
"Which is fortunate for you, Jervis. If she had not been in such a fluster, she would have waited until you had poured out your tea, which was what she probably meant to do, or have dropped the sugar into the milk-jug. In either case you would have got a poisonous dose before you noticed anything amiss."
"They are a pretty pair, Thorndyke," I exclaimed. "A human life seems to be no more to them than the life of a fly or a beetle."
"No; that is so. They are typical poisoners of the worst kind; of the intelligent, cautious, resourceful kind. They are a standing menace to society. As long as they are at large, human lives are in danger, and it is our business to see that they do not remain at large a moment longer than is unavoidable. And that brings us to another point. You had better keep indoors for the next few days."
"Oh, nonsense," I protested. "I can take care of myself."
