For example, I once brought from Stonehenge a tiny fragment of stone, not larger than a pin's head, and on putting this into an envelope and handing it to a psychometer who had no idea what it was, she at once began to describe that wonderful ruin and the desolate country surrounding it, and then went on to picture vividly what were evidently scenes from its early history, showing that that infinitesimal fragment had been sufficient to put her into communication with the records connected with the spot from which it came. The scenes through which we pass in the course of our life seem to act in the same manner upon the cells of our brain as did the history of Stonehenge upon that particle of stone: they establish a connection with those cells by means of which our mind is put _en rapport_ with that particular portion of the records, and so we "remember" what we have seen. Even a trained clairvoyant needs some link to enable him to find the record of an event of which he has no previous knowledge. If, for example, he wished to observe the landing of Julius Caesar on the shores of England, there are several ways in which he might approach the subject. If he happened to have visited the scene of the occurrence, the simplest way would probably be to call up the image of that spot, and then run back through its records until he reached the period desired. If he had not seen the place, he might run back in time to the date of the event, and then search the Channel for a fleet of Roman galleys; or he might examine the records of Roman life at about that period, where he would have no difficulty in identifying so prominent a figure as Caesar, or in tracing him when found through all his Gallic wars until he set his foot upon British land. People often enquire as to the aspect of these records--whether they appear near or far away from the eye, whether the figures in them are large or small, whether the pictures follow one another as in a panorama or melt into one another like dissolving views, and so on. One can only reply that their appearance varies to a certain extent according to the conditions under which they are seen. Upon the astral plane the reflection is most often a simple picture, though occasionally the figures seen would be endowed with motion; in this latter case, instead of a mere snapshot a rather longer and more perfect reflection has taken place.