In some cases, the person traveling in the astral is able to actually take part in the distant scene, and may, under certain circumstances actually materialize himself so as to be seen by persons in their physical bodies. I am speaking now, of course, of the untrained person. The trained and developed occultist, of course, is able to do these things deliberately and consciously, instead of unconsciously and without intention as in the case of the ordinary person. I shall quote here from another writer on the subject, whose point of view, in connection with my own, may serve to bring about a clear understanding in the mind of the student--it is always well to view any subject from as many angles as possible. This writer says: "We enter here upon an entirely new variety of clairvoyance, in which the consciousness of the seer no longer remains in or closely connected with his physical body, but is definitely transferred to the scene which he is examining. Though it has no doubt greater dangers for the untrained seer than either of the other methods, it is yet quite the most satisfactory form of clairvoyance open to him. In this case, the man's body is either asleep or in a trance, and its organs are consequently not available for use while the vision is going on, so that all description of what is seen, and all questioning as to further particulars, must be postponed until the wanderer returns to this plane. On the other hand, the sight is much fuller and more perfect; the man hears as well as sees everything which passes before him, and can move about freely at will within the very wide limits of the astral plane. He has also the immense advantage of being able to take part, as it were, in the scenes which come before his eyes--of conversing at will with various entities on the astral plane, and from whom so much information that is curious and interesting may be obtained. If in addition he can learn how to materialize himself (a matter of no great difficulty for him when once the knack is acquired), he will be able to take part in physical events or conversations at a distance, and to show himself to an absent friend at will.