"There's another. Who on earth has lighted the fires on those scarped points? What can their object be?"
"Oh! It is easy enough to understand that, excellency."
"Do you think so, my boy? Well, then you will explain it to me."
"I am willing to do so. Stay," he said, pointing to the first fire: "that hill is the Cerro del Gigante."
"It is."
"And that," the capataz continued, pointing to the second fire, "is the Cerro de San Xavier."
"I think it is."
"I am certain of it."
"Well?"
"As we know that a fire cannot kindle itself, and as people do not amuse themselves with a fire when the thermometer is up at a hundred—"