that year, but it was in the shape of mineral rather than of animal magnetism. One Benjamin Douglas Perkins, an American, practising as a surgeon in Leicester Square, invented and took out a patent for the celebrated "Metallic Tractors." He pretended that these tractors, which were two small pieces of metal strongly magnetised, something resembling the steel plates which were first brought into notice by Father Hell, would cure gout, rheumatism, palsy, and, in fact, almost every disease the human frame was subject to, if applied externally to the afflicted part, and moved about gently, touching the surface only. The most wonderful stories soon obtained general circulation, and the press groaned with pamphlets, all vaunting the curative effects of the tractors, which were sold at five guineas the pair. Perkins gained money rapidly. Gouty subjects forgot their pains in the presence of this new remedy; the rheumatism fled at its approach; and toothache, which is often cured by the mere sight of a dentist, vanished before Perkins and his marvellous steel-plates. The benevolent Society of Friends, of whose body he was a member, warmly patronised the invention. Desirous that the poor, who could not afford to pay Mr. Perkins five guineas, or even five shillings for his tractors, should also share in the benefits of that sublime discovery, they subscribed a large sum, and built an hospital, called the "Perkinean Institution," in which all comers might be magnetised free of cost. In the course of a few months they were in very general use, and their lucky inventor in possession of five thousand pounds.
Dr. Haygarth, an eminent physician at Bath, recollecting the influence of imagination in the cure of disease, hit upon an expedient to try the real value of the tractors. Perkins's cures were too well established to be doubted; and Dr. Haygarth, without gain-saying them, quietly, but in the face of numerous witnesses, exposed the delusion under which people laboured with respect to the curative medium. He suggested to Dr. Falconer that they should make wooden tractors, paint them to resemble the steel ones, and see if the very same effects would not be produced. Five patients were chosen from the hospital in Bath, upon whom to operate. Four of them suffered severely from chronic rheumatism in the ankle, knee, wrist, and hip; and the fifth had been afflicted for several months with the gout. On the day appointed for the experiments Dr. Haygarth and his friends assembled at the hospital, and with much solemnity brought forth the fictitious tractors. Four out of the five patients said their pains were immediately relieved; and three of them said they were not only relieved but very much benefited. One felt his knee warmer, and said he could walk across the room. He tried and succeeded, although on the previous day he had not been
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