Between 1870 and 1873, chemist and physicist William Crookes conducted experiments to determine the validity of the phenomena produced by three mediums: Florence Cook, Kate Fox, and Home. Crookes' final report in 1874 concluded that the phenomena produced by all three mediums were genuine, a result which was roundly derided by the scientific establishment. Crookes recorded that he controlled and secured Home by placing his feet on the top of Home's feet. Crooke's method of foot control later proved inadequate when used with Eusapia Palladino, as she merely slipped her foot out and into her sturdy shoe. In addition, Crookes' motives, methods, and conclusions with regard to Florence Cook were called into question, both at the time and subsequently, casting doubt on his conclusions about Home. In a series of experiments in London at the house of Crookes in February 1875, the medium Anna Eva Fay managed to fool Crookes into believing she had genuine psychic powers. Fay later confessed to her fraud and revealed the tricks she had used.