"That's almost as bad as asking a man to make the noose he is to hang in. You forget that on leaving here I shall go straight to prison."

"I had forgotten, major, and sorry enough I am to remember it. Still, as La Hera returns so soon, it will be only a temporary inconvenience, and I'm sure Colonel Miller will treat you well."

Santiago laughed.

"You will make me fancy soon that imprisonment is a privilege worth paying for," he exclaimed.

"Hardly that," I replied; "but, as Barejo said, it keeps one out of mischief."

We lowered the rope, the guide attached the surgeon's instruments, and at a signal we hauled up. Then the rope went down again, the two soldiers climbed to the cave, and the doctor followed unsteadily. It was evident that this novel method of visiting patients found no favour in his eyes; he was obviously nervous, and twice during the ascent I quite expected to see him go headlong.

He was a citizen of Moquegua, very young, and utterly unsuited for his present errand. So great was his agitation that when he had planted his feet firmly on the floor of the cave his hands still clung like grim death to the rope.

"You're all right now," I said, leading him away from the mouth of the cave. "Rather a queer way of getting into a house, isn't it?"

"The saints preserve me!" he exclaimed, while his teeth chattered like castanets, "this is horrible. A dozen times, coming up that rope, I wished I'd never been born. But it's the last time I'll practise doctoring outside Moquegua."

"You did very creditably, I assure you, doctor," observed Santiago, whose eyes gleamed with fun; "such grace, such agility, is given to few. I should have thought your life had been spent in scaling mountains."