I have had occasion also of verifying this phenomenon, under the technical conditions indicated by Colonel de Rochas. Very few sensitives present it in a marked manner, and it has seemed to me necessary to push the artificial sleep rather deeply. This expression may seem somewhat antiquated, to those who have frequented our learned neurological cliniques; but I cannot help thinking, that a real difference exists between the different phases of somnambulism, if they be observed. I speak of a difference of degree. It seems to me that, once the subject is put to sleep, the repeated action of the passes determines a particular state, pointed out by ancient magnetisers and exposed in detail by de Rochas, in which the subject appears to lose the notion of his personality, and be in close dependence upon his ‘magnetiser.’ I have experimented very little in this order of research, and I can permit myself only to give indications; I am unable to affirm a personal conviction. The few experiments I have made, however, tend to make me think that de Rochas is quite right in speaking of superficial and profound states. I am not convinced that the passage from the one to the other takes place with the regularity that my eminent friend has observed, but the fact pointed out by him is, I think, true in a general way. I am going to support my opinion with an example. I have already spoken of Madame Agullana. Those who have only been present at her ordinary seances can have no idea of the curious faculties, she sometimes presents. An experienced manipulator can obtain with her—on condition of operating quietly and in the presence of very few people—phenomena which are very interesting, in the sphere of what is called animal magnetism. I was at her home one evening with Monsieur B. We were expecting a tutor, a medium of whom I had heard marvellous things. This tutor did not turn up; but, while waiting for him, I put Madame Agullana to sleep; I wished to show Monsieur B., who had no experience of this kind, the effects of profound sleep. I prolonged my passes, made longitudinally from the forehead to the epigastrium, for more than twenty-five minutes. From time to time, every seven or eight minutes, I asked Madame Agullana what was her name. She told me her name. At last the moment came when she could not remember her name, and appeared to have lost consciousness of her personality. I made a few more passes, and remarked to Monsieur B. that, when Madame A. appeared to have cutaneous anæsthesia, she seemed to perceive pricks at a distance of two or three centimetres from the skin. The passes were continued for about another quarter of an hour; at that moment Madame A. appeared to present two peculiarities:— 1. Her sensitiveness appeared to be localised behind her, at about three feet from, and twenty-one inches above the level of her head. She winced, when—care being taken that she did not see—the air was pinched at the spot indicated.