While under treatment in the Saint Antoine Hospital, this patient was carefully studied by Dr. Mesnet and by Alfred Maury, the celebrated author. They found that by means of impressions upon his tactile sensibility it was possible during any one of his paroxysms to suggest certain modes of action which were reproduced whenever he was again placed in the same conditions. Thus, “he was promenading in the garden, under a grove of trees, when some one put back into his hand the cane which he had let fall a few moments previously. He felt of it, turned his hand several times around the curved handle of the cane, became attentive, seemed to listen, and suddenly cried out, ‘hurry!’ then, ‘there they are! there are at least twenty of them, to the two of us! we shall get the better of them!’ and then, carrying his hand behind his back, as if to get a cartridge, he went through the movements of loading his musket, crouched at full length in the grass, concealing his head behind a tree, in the posture of a sharp-shooter, and following with his gun at his shoulder all the movements of the enemy whom he seemed to see close at hand. This scene often repeated in detail during the course of the observations, has seemed to each of us the most complete expression of an hallucination called up by an illusion of touch, which, giving to a cane the properties of a gun, awakened in this person remembrances of his last campaign, and reproduced the struggle in which he was so grievously wounded.” On another occasion the patient was at the end of a corridor, near a door that was locked; he “passed his hands over this door, found the knob, grasped it, and attempted to open it; failing to accomplish this, he sought for the keyhole, then for the key, which, however, was not there; then, passing his fingers over the screws which secured the lock, he endeavored to seize them and turn them for the purpose of detaching the lock. _This entire series of actions bears witness to an effort of his mind connected with the object before him._ He was on the point of leaving the door and turning towards another room, when I held up before his eyes a bunch of seven or eight keys; he did not see them; I jingled them loudly at his ear; he did not notice them; placing them in his hand, he immediately took hold of them, and tried them one by one in the keyhole, without finding the single one which could fit; he then left the place, and went into one of the wards, taking in his passage various articles with which he filled his pockets; at length he came to a little table used for the records of the wards. He then passed his hands over the table, but it was empty; in feeling of it, however, he came across the handle of a drawer; opening it, _he took up a pen, and all at once this pen suggested to him the idea of writing_; for at that moment he began to ransack the drawer, taking out and placing on the table several sheets of paper, and also an inkstand.