In truth he observes not only what he would have seen if he had been there at the time in the flesh, but much more. He hears and understands all that the people say, and he is conscious of all their thoughts and motives; and one of the most interesting of the many possibilities which open up before one who has learnt to read the records is the study of the thought of ages long past--the thought of the cave-men and the lake-dwellers as well as that which ruled the mighty civilisations of Atlantis, of Egypt or Chaldaea. What splendid possibilities open up before the man who is in full possession of this power may easily be imagined. He has before him a field of historical research of most entrancing interest. Not only can he review at his leisure all history with which we are acquainted, correcting as he examines it the many errors and misconceptions which have crept into the accounts handed down to us; he can also range at will over the whole story of the world from its very beginning, watching the slow development of intellect in man, the descent of the Lords of the Flame, and the growth of the mighty civilisations which they founded. Nor is his study confined to the progress of humanity alone; he has before him, as in a museum, all the strange animal and vegetable forms which occupied the stage in days when the world was young; he can follow all the wonderful geological changes which have taken place, and watch the course of the great cataclysms which have altered the whole face of the earth again and again. In one especial case an even closer sympathy with the past is possible to the reader of the records. If in the course of his enquiries he has to look upon some scene in which he himself has in a former birth taken part, he may deal with it in two ways; he can either regard it in the usual manner as a spectator (though always, be it remembered, as a spectator whose insight and sympathy are perfect) or he may once more identify himself with that long-dead personality of his--may throw himself back for the time into that life of long ago, and absolutely experience over again the thoughts and the emotions, the pleasures and the pains of a prehistoric past. No wilder and more vivid adventures can be conceived than some of those through which he thus may pass; yet through it all he must never lose hold of the consciousness of his own individuality--must retain the power to return at will to his present personality.