The true history of man will be found in his tombs, says Thucydides; and as a matter of fact the sepulchre has ever occupied much of the thoughts of man, the result of a religious sentiment, a conviction that all does not end with the life which so quickly passes by. From the very earliest times we meet with tokens of the hopes and fears connected with a future existence; but, as I have already stated, the human bones that can with certainty be said to date from Palæolithic times are very rare.