‘John’ (the secondary personality) ‘then asks M. Rochas, who holds Eusapia’s left hand in his right hand, to put his left hand on Eusapia’s neck, the fingers stretched out as though in the act of magnetising; he then tells him to lower his fingers. M. Rochas executes the movement several times, and each time M. Maxwell, who holds the medium’s right hand, feels synchronous touches on his right shoulder, which is, at the very least, eighteen inches away from the medium.’ This fact may be compared with those I indicated when dealing with raps and motor or luminous phenomena. We see how constant the relation is between the medium’s movements and the phenomenon. This is a first general ascertainment. If I might venture to use the expression, I would say that we are in the presence of one of the first laws governing the production of these paranormal phenomena. I have not sufficiently observed the phenomenon of touch to be able to say, that the relation indicated exists between the muscular contraction and the phenomenon, rather than between the phenomenon and the movement executed; but some facts, far too few, it is true, tend to make me think it is so. Finally, the experimenters, and especially the medium, are very fatigued after the production of the phenomenon of touch. The influence of light seems to be very unfavourable. I have not had occasion of observing touches in full light, as I have so often done with raps and movements without contact. Almost total obscurity was necessary with Eusapia. This circumstance brings the phenomenon of _attouchement_ into conjunction with that of materialisation. This is interesting, for if the touches are due to the condensation of some matter, as materialised forms appear to be, there is room to think that the two phenomena are closely connected, and that it is the same substance which, in becoming condensed, produces them both. This is what I have observed, notably at l’Agnélas, when I saw a hand and arm touch M. Sabatier’s head, at the moment the latter mentioned having been touched on the head. We see how much a calm and impartial examination of the facts reveals common conditions for their production, and similarities between some among them. II. Stamped impressions or imprints bring us into the presence of a category of phenomena of the same order. Pressure appears to be exercised upon a material substance instead of upon the sitters. If that substance be soft enough, the impression of the form which has exercised the pressure may be left upon it. I have only twice observed this phenomenon, and that was with Eusapia. It was at Choisy in 1896. The first time, we obtained the impression of the mounts of the fingers in lamp-black. The conditions of observation were not good. The second time, the impression was marked in clay. I take the following extract from our report:—