Some weeks later, when another consignment of the mysterious ‘Scotch pebbles’ had arrived for Miss Blandy, it was noticed that her conduct became still more dark and strange. Slinking through the house with slow and stealthy tread, she appeared to shun all eyes, as though bent upon some hidden purpose. A glance within the box from the North would have revealed the secret. When the crafty accomplice found that she was unable to procure the means of taking her father’s life, he had been forced to supply her with the weapons. During the spring, the health of the old lawyer, who suffered more or less from chronic ailments, began to grow more feeble. His garments hung loosely upon his shrunken limbs, while the teeth dropped from his palsied jaws. The old witch’s curse seemed to have fallen upon the home, and, to those who looked with apprehension for every sign and portent, it was fulfilled in many direful ways. Early in June, Ann Emmet, an old charwoman employed about the house, was seized with a violent illness after drinking from a half-emptied cup left at Mr Blandy’s breakfast. A little later, Susan Gunnel, one of the maid-servants, was affected in a similar way through taking some tea prepared for her master. One August morning, in the secrecy of her own chamber, trembling at every footfall beyond the locked door, Mary Blandy gazed with eager, awestruck eyes upon a message sent by her lover. “I am sorry there are such occasions to clean your pebbles,” wrote the murderous little Scotsman. “You must make use of the powder to them, by putting it into anything of substance, wherein it will not swim a-top of the water, of which I wrote to you in one of my last. I am afraid it will be too weak to take off their rust, or at least it will take too long a time.” From the language of metaphor it is easy to translate the ghastly meaning. She must have told Cranstoun that the white arsenic, which he had sent to her under the pseudonym of ‘powder to clean the pebbles,’ remained floating on the surface of the tea. Possibly her father had noticed this phenomenon, and, not caring to drink the liquid, had escaped the painful sickness which had attacked the less cautious servants. But now she had found a remedy--‘anything of substance!’--a safe and sure vehicle that could not fail. Louder still in the ears of the lost woman rang the mocking words, “When the old man is dead you shall be happy.” During the forenoon of Monday, the 5th of August, Susan Gunnel, the maid, met her young mistress coming from the pantry. “Oh, Susan,” she exclaimed, “I have been stirring my papa’s water gruel”; and then, perceiving other servants through the half-open door of the laundry, she added gaily, “If I was ever to take to eating anything in particular it would be oatmeal.” No response came from the discreet Susan, but she marvelled, calling to mind that Miss Blandy had said to her some time previously, noticing that she appeared unwell: