Seeing that escape was impossible, they dashed straight at us.

It wasn’t much of a fight.  One came at me with his head lowered like a charging bull; I sidestepped easily and floored him with a single blow.  He scrambled to his feet, but by that time I had recovered the spear and had it ready for him.

I waited until he was quite close, then let him have it full in the chest.  The fool literally ran himself through, hurling himself on the sharp point in a brutal frenzy.  He lay on his back, quite still, with the spear-head buried in his chest and the shaft sticking straight up in the air.

I turned to Harry, and in spite of myself smiled at what I saw.  He stood with his right arm upraised, holding his spear ready.  His left foot was placed well and gracefully forward, and his body bent to one side like the classic javelin-thrower.  And ten feet in front of him the other Inca had fallen flat on his face on the ground with arms extended in mute supplication for quarter.

“What shall I do?” asked Harry.  “Let him have it?”

“Can you?”

“The fact is, no.  Look at the poor beggar—­scared silly.  But we can’t let him go.”

It was really a question.  Mercy and murder were alike impossible.  We finally compromised by binding his wrists and ankles and trussing him up behind, using a portion of one of the spear-thongs for the purpose, and gagging him.  Then we carried him behind a large boulder some distance from the ledge and tucked him away in a dark corner.

“And when we get back—­if we ever do—­we can turn him loose,” said Harry.

“In that case I wouldn’t give much for his chances of a happy existence,” I observed.

We wasted no time after that, for we wanted no more interruptions.  Some fifteen precious minutes we lost trying to withdraw the spear I had buried in the body of the Inca, but the thing had become wedged between two ribs and refused to come out.  Finally we gave it up and threw the corpse in the lake.

We then removed the oars and spears and raft—­which had floated so near to the ledge that we had no difficulty in recovering it—­to our hiding-place, and last we tackled our fish.

It was a task for half a dozen men, but we dared not remain on the ledge to skin him and cut him up.  After an hour of exertion and toil that left us completely exhausted, we managed to get him behind a large boulder to the left of the ledge, but it was impossible to carry him to the place we had selected, which could be reached only by passing through a narrow crevice.

The only knives we had were the points of the spears, but they served after a fashion, and in another hour we had him skinned and pretty well separated.  He was meaty and sweet.  We discovered that with the first opportunity, for we were hungry as wolves.  Nor did we waste much time bewailing our lack of a fire, for we had lived so long on dried stuff that the opposite extreme was rather pleasant than otherwise.