Ned moved along the shelf, and soon came to where Pedro stood, sheltered by a jutting ledge. The journey was not accomplished without attracting the attention of the others, for an arrow whizzed past his head as he crept into the angle with Pedro.

Pedro expressed great joy at the arrival of the boy, and explained that the situation as then shown had existed since dawn. On the afternoon of the previous day Jimmie, being then about to return to Lima, had found it necessary to land in order to repair a slight break in a plane.

The driver of the pursuing Vixen, noting the temporary disablement, had circled around the valley for a short time and then returned to Lima. It was Pedro's idea that the Vixen would not return with assistance, but with enemies who would destroy the machine, leaving Jimmie and himself to find their way out of the mountains as best they could.

Jimmie, Pedro said, had been unable to fix the Nelson for flight until about daylight, and then the attacking party had appeared. Since then it had been impossible to get the machine into the air, as every motion at the airship brought a bullet or a poisoned arrow.

Just before Ned's arrival, an Indian had, by making a long journey around the cliff, gained the shelf of rock where Pedro was stationed, and been caught unawares and thrown down into the valley. It was the cry and the fall of this foe that Ned had heard.

"But," Ned said, "the Vixen must have summoned some one active in the conspiracy before returning to Lima, for the man over there came in an automobile, and did not come very far either. He certainly did not come from Lima, which is more than three hundred miles away."

"He might have come from Sicuani," replied Pedro. "That is over to the east, and not more than twenty miles off. I have heard that there is a path by means of which a motor car can reach this place. Yes, he must have gone to Sicuani, otherwise this man of the motor car would not be here," Pedro added.

This cleared the situation not a little, and Ned was now encouraged to make an attempt to reach the Nelson, which Pedro declared to be in good condition for flight. If the others had come in an automobile, there could not be many of them. Probably not more than six in all, and two had been wounded, or killed.

Pedro insisted that, with Ned guarding him from the shelf, he could reach the machine, but the boy thought it wiser to make the desperate journey himself. Even if the Indian reached the Nelson, the two of them might not be able to get the machine into the air, as Jimmie had had little experience in running a plane.

So, after explaining to Pedro that he would be taken up later, Ned began the task of making his way down the almost perpendicular face of the cliff. Much to his surprise, there were no hostile demonstrations from the gully in which the attackers had disappeared a short time before.