"On top of the Ruby Mountain yesterday," answered the boy.
CHAPTER XXIII
IN THE RUBY MOUNTAIN
Tom Phipps nodded. He recalled his conversation with Tad upon the other's upon his return from his visit to the Ruby Mountain, and the lad's description of the mysterious voice he had heard there. Mr. Phipps did not give very serious consideration to that part of the boy's story at the time. Now, however, he was startled beyond words.
All of them were startled. To hear a strange voice many feet down under the ground, when all supposed they were far beyond the reach of a human voice, was enough to give almost anyone a start.
Yet Tad was not as much surprised as were his companions, for it will be remembered he already had been through the experience that was so new to the others.
"Who are you?" demanded Mr. Phipps almost sternly.
There was no reply to his question.
"Tad, are you sure that is the same voice?"
"Positive. There can be no doubt. And, besides, she has used the same words."