Kepenau, after speaking in the same way to others, offered up a prayer, in which several of his own people joined.  Not till then did he discover us.  With a look of surprise he at once advanced to greet Mike and me, his countenance as well as his words exhibiting his satisfaction.  He afterwards turned again to the young chief, and addressed him.  He had, until now, I found, suspected that Manilick had instigated the attack on us, if he had not taken part in it, and he wished openly to exonerate him.  Kepenau questioned me as to the dress and appearance of the Indians who had made us prisoners.  From my description he was satisfied that they were really Sioux, and that Manilick had nothing to do with them.