If I strongly recommend people not to abandon the conduct of their life or business affairs to the personification, I recommend just as strongly treating the latter with the greatest possible attention. We can only form hypotheses about its essence; and the scepticism which my observations, taken as a whole, have instilled into me, may be ill-founded; therefore it is better to treat it with the same courtesy we show our fellow-experimenters. This attitude is prudent; it is also the most profitable one. In practice, I have the same regard for the personification as for the medium. I do not call it ‘dear spirit’ as spiritists do, but I find I do well to make it clearly understand what I am seeking; whatever in reality the personification may be, its co-operation seems to me to be indispensable. The resemblance between the reaction of the personification and that of the subliminal consciousness is so obvious, that I have no need to enlarge upon it. In practice, the first manifestation of this—probably fictitious—being will consist in a knocking on the floor with the leg of the table. It is well to agree upon a code of signals. The simplest is two raps for ‘no,’ three for ‘yes,’ five for the alphabet. At the beginning, it will be difficult to avoid these knockings. I have already said it is desirable to discourage them and to induce the personification to manifest itself otherwise. It would be well to accept the typtological code of signals above mentioned for the first conversations, but to abandon it as soon as it has been clearly explained to the personification, that movements with contact are unacceptable. I am, of course, speaking under the supposition that telekinetic or parakinetic movements are desired. If the personification, at the end of five or six seances of an hour each, does not begin to produce the desired phenomena, the circle must be modified in the manner already pointed out. These modifications ought to be patiently continued, until a medium has been met with. The personification might be asked to name the sitter who is to be replaced, and, if possible, to designate his substitute. Such a designation is often very useful. Once or twice I have seen the table name persons whom, at the moment of the experiment, no one in our midst had thought of—at least consciously. Various reasons prevented the given indications from being followed, and the experiments were discontinued. Movements with contact can be eliminated by the process I have mentioned; their elimination, made with the consent of the personification, presents no inconvenience, unless it be done too abruptly.