which they can be produced? If there be phenomena in which the results cannot be traced to their sources, can they be shown to be similar to other effects whose causes can be thus traced?
In investigating phenomena, some of which it is claimed are connected with religion and others with occult forces, it is necessary to proceed without regard to the question of religion, in determining whether the facts can be accounted for upon natural principles, and paralleled by the application thereof.
In searching for analogies I avail myself of authentic cases found in John Hunter, in Dr. Tuke's work previously referred to, in the "Mental Physiology" of Dr. Carpenter, and in the psychological researches of Sir Benjamin Brodie and Sir Henry Holland; selecting, however, only such facts as have been paralleled under my own observation.
First. Cases where the effect is unquestionably produced by a natural mental cause.
(a) The charming away of warts is well established. Dr. Tuke says of them: "They are so apparent that there cannot be much room for mistake as to whether they have or have not disappeared, and in some instances within my own knowledge their disappearance was in such close connection with the psychical treatment adopted, that I could hardly suppose the cure was only post hoc. In one case, a relative of mine had a troublesome wart on the hand, for which I made use of the usual local remedies, but without effect. After they were discontinued, it remained in statu quo for some time, when a gentleman 'charmed' it away in a few days." He then tells of a case the particulars of which he received of a surgeon. His daughter had about a dozen warts on her hands, and they had been there eighteen months; her father had applied caustic and other remedies without success. A gen-
