“A sort of cave?” said Leighton.

“Yes, but one made by human hands, as we discovered as soon as we crossed the threshold. The walls were cut and carved in many curious devices, while around the three sides ran a shelf cut in the rock, on which reposed many bones piled in regular heaps. A glance revealed the fact that they were human bones,—we were in some prehistoric sarcophagus. Presently, as our eyes became accustomed to the subdued light, we began to look about us more closely. I was examining a pile of bones at the end farthest from the opening, comparing them with the skull in our possession, when, finding them apparently of the usual size, I tossed a thigh bone carelessly back on the shelf. It struck the pile with more force than I had intended, and they all came tumbling to the floor; but as they fell they revealed what appeared then, and subsequently proved to be, a crystal casket. It was about eighteen inches long by six high, and a foot wide; and, as I took hold of it, it moved with my hand. Carrying it to the opening I set it down in the light. Then, for the first time, I saw that it was filled with a blue substance, whose nature I could not clearly make out, owing to the dust and dirt covering the case. Upon examining the lid I found that it was not hinged but simply set on over the top. A quick jerk brought it away, and there before our staring eyes lay a huge heap of blue stones, all cut, and polished to a dazzling brilliancy.

“‘Sapphires!’ cried Mitchell, and his eyes bulged from his head.

“‘Are you certain?’ I asked, almost breathless from amazement.

“‘Absolutely,’ he said. ‘Look at them,’ and he took a handful of the beautiful stones. ‘You never saw glass like that.’

“I thought as he did, but, being no judge of such things, was not too ready to let my hopes soar, only to be dashed to earth again. There must have been at least two pecks of them, ranging in size from a small pea to stones as big as the end of my thumb,—and all perfectly cut. Suddenly, as we stood gazing incredulously at the gleaming stones, my thoughts flew to the skull, and I ran to fetch it. As I brought it into the light I saw that its gaze was now riveted on the casket, the lidless blue orbs seeming actually to gloat over the piles of blue stones. A new thought flashed through my mind. Could it be—? Yes—undoubtedly—the eyes that we had thought only bits of blue glass were themselves sapphires, but larger and finer than any in the casket.

“Well, Mitchell and I were practical, first of all. As soon as we had recovered from our amazement we made a thorough search of the cave. Finding nothing more, however, we took ourselves and our precious burdens to the camp, and that very night we started for San Francisco.”

“And the stones proved really sapphires?” said Leighton.

“Sapphires! I should say so. The leading jewelers to whom we showed a few specimens upon our arrival in San Francisco, two days later, pronounced them gems of the first water, and gladly paid us twenty thousand dollars for sixty of the smaller stones. Upon parting company we divided the sapphires equally between us, and since then I have visited every capital of Europe, in each of which the stones have been pronounced flawless.”