CHAPTER X
A WILD HORSE STAMPEDE
"Who is that man?" demanded Tom pointing to the one Ned had indicated. Tom's chum had had a glimpse of a shining revolver in the hip pocket of one of the mule drivers, and knowing that the simple natives were not in the habit of carrying such weapons, the lad had communicated his suspicions to Tom.
"What man, senor?" asked the head mule driver.
"That one!" and the young inventor again pointed toward him. And, now that Tom looked a second time he saw that the man was not as black as the other drivers—not an honest, darkskinned black but more of a sickly yellow, like a treacherous half-breed. "Who is he?" asked Tom, for the man in question was just then tightening a girth and could not hear him.
"I know not, senor. He come to me when I am hiring the others, and he say he is a good driver. And so he is, I test him before I engage
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