Now, if the rubber covering (d) were pressed upon, this would force some of the water, in a, along the tube, b, and the added air-pressure would depress the column of mercury in the manometer, causing the floating needle to rise on the opposite side, and scratch upon the revolving drum. Fig. 3 shows some of the tracings which were obtained in this way--the force acting through the cloth top, g. [Illustration: Fig 3] The instruments thus recorded a _definite physical, intelligent force_. It may interest my readers to know that, at the time of his death, M. Curie,--who had been completely convinced of the reality of these phenomena,--was busy devising an instrument which would register and direct _psychic power_ liberated from the body of a physical medium when in trance. Dr. Imoda, the assistant of Professor Mosso, has also conducted a number of experiments in the discharge of an electroscope, by means of "rays" issuing from the medium's body. It was found that, if the medium held her fingers at a distance of an inch or so from the knob of the electroscope, some form of energy, apparently _radio-active_ in character, issued from her fingers, and _gradually discharged the electroscope_. This is the "radiation" or "emanation" issuing from the body, which has been studied extensively by students of the occult. Dr. Imoda concluded--as the result of his experiments--that "_the radiations of radium, the cathode radiations of the Crookes' tube, and mediumistic radiations are fundamentally the same_." Some other very interesting facts have been observed by means of the electroscope. For example, Dr. W. J. Crawford (D.Sc), in his experiments, noted that:-- "... In seance rooms where tables are moved without physical contact, I found that after a sitting was well started, I was always _unable_ to charge an electroscope, even though I tried to do so in the corner of the chamber farthest from the medium. In order to charge it I had to take it outside the room. I asked the 'operators' (intelligences 'directing things,' apparently, in the seance-room) if there was any 'power' in the seance-room so far away from the medium, and they answered in raps that there was. By 'power' I understand them to mean particles of matter taken from the medium...." Again, in his _Reality of Psychic Phenomena_, he says: "I took the electroscope to the table in the corner; then placed it in the circle near the medium. I asked the operators to touch the disc of the instrument very gently. They did this almost at once, the 'touching' consisting of a metallic scraping upon the brass disc, quite audible, similar in type to the imitation of the floor being rubbed with sand paper, a phenomenon I quite often observed. "Result:--On examination, the electroscope was found to be completely _discharged_!