We ate and drank, but gave neither water nor food to our fellow prisoner.  Not because I really expected to force negotiations with the Incas—­but the thing was possible and was worth a trial.  I knew them well enough to appraise correctly the value of any safe-conduct they might give us.

I was a little surprised to find in Desiree no levity, the vulgar prop for courage based on ignorance.  There was a tenderness in her manner, especially toward Harry, that spoke of something deeper and awoke in my own breast a deeper respect for her.  The world had not known Desiree Le Mire—­it had merely been fascinated and amused by her.

Many hours had passed in this tomblike apathy.  Two or three times I had advised Desiree to lie down to rest and, if possible, to sleep.  She had refused, but I became insistent, and Harry added his voice to my own.  Then, to please us, she consented; we arranged the cover on the granite couch and made her as comfortable as possible.

In five minutes she was fast asleep.  Harry stood a few feet away from the couch, looking down at her.  I spoke to him, in a low tone: 

“And you must rest too, Hal.  One of us must remain on watch; I’ll take it first and call you when I feel drowsy.  It may be a needless precaution, but I don’t care to wake up and find myself in the condition of our friend yonder.”

He wanted to take the first watch himself, but I insisted, and he arranged our ponchos on the ground, and soon he too was sleeping easily and profoundly.  I looked from him to Desiree with a smile, and reflection that Socrates himself could not have met misfortune with more sublime composure.

It was possible that the stone curtain across the doorway could be raised noiselessly, and that made it necessary to keep my eyes fastened on it almost continuously.  This became irksome; besides, twice I awoke to the fact that my thoughts had carried me so far away from my surroundings that the stone could have been raised to the roof and I would not have noticed it.

So, using my jacket for a cushion, I seated myself on the ground in the threshold, leaning my back against the stone, and gave myself up to meditation.

I had sat thus for three hours or more, and was thinking of calling Harry to relieve me, when I felt a movement at my back.  I turned quickly and saw that the stone was moving upward.

Slowly it rose, by little frequent jerks, not more than an eighth of an inch at a time.  In fifteen minutes it was only about four inches from the ground.  There was no sound save a faint grating noise from above.

I stood several feet away, holding one of the golden clubs in my hand, thinking it unnecessary to rouse Harry until the space was wide enough to cause apprehension.  Or rather, because I had no fear of an assault—­I was convinced that our ruse had succeeded, and that they were about to communicate with us by means of the quipos.