Though all evidences of a beaten trail to the cave had disappeared, it was an easy matter to trace the upward progress of the one that had existed in the days of the lost tribe. Boulders of large size evidently had been rolled away from the most logical route. They wound their way in and out among the towering rocks to the mouth of the cave, probably seventy feet above the narrows. From below they had seen its gaping mouth, but were fearful that it would prove a shallow disappointment--a mere niche in the rocky hillside. But it turned out to be a substantial, denlike tunnel, forty feet or more in length. Men had not fashioned it, but within they had moved huge boulders to one side or the other to make more room in the middle. Irregular stones had covered the floor, too, and smaller ones had been thrown into the crevices, with dirt piled on top, to level it off. The width and height were probably fifteen feet. They found more skeletons, more pottery, more implements of war and the chase, and crude tools of stone and bone. The boulders inside were decorated, designs and hieroglyphics having been hacked below the surface. Some sort of red paint of a decidedly perdurable quality had been worked into the gouged lines. Once again Charmian saw an unhappy lady ridding herself of the frog that she had swallowed. But in this instance she did not suffer alone. If misery loves company, she must have been in an amiable mood, despite her throes. For no less than a dozen of her unfortunate sisters were engaged in a like performance on boulders and stony walls. “I’ve got it, Charmian,” Andy cried with the enthusiasm of an amateur ethnographer. “I know now what it means. The northern tribes had woman doctors, and they treated their patients by sucking the flesh. They were supposed to suck out the evil spirit that was tormenting them, and this evil spirit often took the form of a snake or a lizard or a frog. In order to make good, a doctress is said to have sometimes swallowed a live frog before beginning treatment; and when she threw it up the patient and his relatives were convinced that the faker had done her best. This was probably the cave of the doctresses. Say--doesn’t it stand to reason?” “How pleasant!” laughed Charmian. “I see now how the nursery term ‘quack frog’ had its birth. Let’s remove the wizards’ remains and take possession of the cave. Can we ever make it cheerful after what you’ve told me? I christen it the Cave of Hypocritical Frogs. That’s rather long and confusing, but so the Indians might have called it had there been unbelievers. We could live in this cave indefinitely, Andy. It will be dry and warm, don’t you think? I hope no bear has decided to hibernate here throughout the winter.”