It is usual to explain the raps by a theory that the 'medium' produces them through cracking his, or her, knee-joints. It may thus be argued that Sister Anthoinette discovered this trick, or was taught the trick, and that the tradition of her performance, being widely circulated in Montalembert's quarto, and by oral report, inspired later rappers, such as Miss Kate Fox, Miss 'C.' Davis, Miss Hetty Wesley, the gentlewoman at Mr. Paschal's, Mr. Mompesson's 'modest little girls,' Daniel Home, and Miss Margaret Wilson of Galashiels. Miss Wilson's uncle came one day to Mr. Wilkie, the minister, and told him the devil was at his house, for, said he, 'there is an odd knocking about the bed where my niece lies'. Whereupon the minister went with him, and found it so. 'She, rising from her bed, sat down to supper, and from below there was such a knocking up as bred fear to all that were present. This knocking was just under her chair, where it was not possible for any mortal to knock up.' When Miss Wilson went to bed, and was in a deep sleep, 'her body was so lifted up that many strong men were not able to keep it down'. {114a} The explanation about cracking the knee- joints hardly covers the levitations, or accounts for the tremendous noise which surrounded Sister Anthoinette at matins, or for the bright light, a common spiritualistic phenomenon. Margaret Wilson was about twelve years of age. If it be alleged that little girls have a traditional method of imposture, even that is a curious and interesting fact in human nature. As regards imposture, there exists a singular record of a legal process in Paris, 1534. {114b}