Although Hartness was a much taller and broader man than the Spaniard, his long, loose overcoat fitted him well enough for the occasion, and when he had put on his shako, and wrapped his scarf about his neck so as to hide his fair beard, he was disguised enough to pass in the darkness for one of the enemy. We now took the two soldiers who had been with the officer and visited all the posts. We found four of the sentries who could not return the password and were therefore enemies. These we disarmed and bound instead of killing them, for I could see that what I had done had pleased my friend but little, though he saw that in such a desperate venture as ours it was necessary to use desperate measures. When we had gone the rounds and made sure of all, we buried the two dead men, and took our prisoners into one of the caves under the carved stones. Then I posted my men so as to guard all the approaches from the city to the Rodadero, and after that I went with Hartness to the hidden hole by the Sayacusca, and showed him how the way to the Hall of Gold was opened. I did this so that the secret might be in good and safe hands if I should fall in battle, and so that he should be able to properly protect the welfare of Ruth and Golden Star, and fulfil my promises to himself and the professor. When I had turned the stone and showed him the chain, I pulled it up and supported it as I had done before, only this time I used the carbine which had belonged to the sentry I had killed, and to the stock of this I fastened a long rope which Tupac had hidden there by my orders. This rope I stretched out along the ground, hiding it as well as I could, in a straight line away from the Sayacusca. The end I led into the entrance of one of the many passages or tunnels which ran under the carved stones. By the time I had done this the water had all flowed away, and Hartness said to me,-- 'Are you going to leave the entrance to your treasure-house open like that for His Excellency to walk into to-morrow?' 'Yes,' I said, 'but it is only half open. Unless the door below is open too there is no way out or in save this and the channel through which the waters flow, so that His Excellency will not find much down there.' 'I see,' he said, 'a trap, and not one that I should care to see a friend of mine walk into. But you don't mean to drown them all like rats in a hole, do you?' 'I cannot tell that yet,' I said. 'If we can take them alive we may do so, but unless they yield to us they shall yield to the water. Now, everything is ready, and we have only to wait. Come and sleep for a little and I will keep watch, and then I will sleep and you shall watch. It will not be daylight for six hours yet, and we can do nothing more till then.'