She turned next to the chimneypiece. Two medicine-bottles were placed on it. She took one of them down--a bottle of the ordinary size, known among chemists as a six-ounce bottle. It contained a colourless liquid. The label stated the dose to be “two table-spoonfuls,” and bore, as usual, a number corresponding with a number placed on the prescription. She took up the prescription. It was a mixture of bi-carbonate of soda and prussic acid, intended for the relief of indigestion. She looked at the date, and was at once reminded of one of the very rare occasions on which she had required the services of a medical man. There had been a serious accident at a dinner-party, given by some friends. She had eaten sparingly of a certain dish, from which some of the other guests had suffered severely. It was discovered that the food had been cooked in an old copper saucepan. In her case, the trifling result had been a disturbance of digestion, and nothing more. The doctor had prescribed accordingly. She had taken but one dose: with her healthy constitution she despised physic. The remainder of the mixture was still in the bottle. She considered again with herself--then went back to the chimneypiece, and took down the second bottle. It contained a colourless liquid also; but it was only half the size of the first bottle, and not a drop had been taken. She waited, observing the difference between the two bottles with extraordinary attention. In this case also, the prescription was in her possession--but it was not the original. A line at the top stated that it was a copy made by the chemist, at the request of a customer. It bore the date of more than three years since. A morsel of paper was pinned to the prescription, containing some lines in a woman’s handwriting:--“With your enviable health and strength, my dear, I should have thought you were the last person in the world to want a tonic. However, here is my prescription, if you must have it. Be very careful to take the right dose, because there’s poison in it.” The prescription contained three ingredients, strychnine, quinine, and nitro-hydrochloric acid; and the dose was fifteen drops in water. Mrs. Farnaby lit a match, and burnt the lines of her friend’s writing. “As long ago as that,” she reflected, “I thought of killing myself. Why didn’t I do it?” The paper having been destroyed, she put back the prescription for indigestion in her dressing-case; hesitated for a moment; and opened the bedroom window. It looked into a lonely little courtyard. She threw the dangerous contents of the second and smaller bottle out into the yard--and then put it back empty on the chimneypiece. After another moment of hesitation, she returned to the sitting-room, with the bottle of mixture, and the copied prescription for the tonic strychnine drops, in her hand.