“But who has told you this?” inquired Clara, with a look of incredulity.

“My fathers—the Zapoteques,” replied Costal, in a solemn tone of voice; “and why should they not know? They have learnt these things from Tlaloc and Matlacuezc—gods they were, as powerful as the Christ of the pale faces. Why—”

“Don’t speak so loud!” interrupted Clara, in a voice that betokened alarm. “The priests of the Christians have their ears everywhere. They might call it blasphemy; and carrambo! the Inquisition has its dangers for blacks as well as whites!”

On hearing the word Inquisition the Indian involuntarily lowered his voice; but continued speaking in a tone that his companion could still hear him.

“My fathers,” said he, “have told me that the Siren never appears to any one who is alone. It is necessary that two be present—two men of tried courage they must be—for the divinity is often wrathful at being invoked, and at such times her anger is terrible. As two men are required, I need another besides myself. Will you then be my companion?”

“Hum!” said Clara. “I may boast that I am not afraid of a man; though I confess I cannot say the same about a tiger. As to your Siren, that appears to be the very devil—”

“Man, tiger, or devil,” cried Costal, “why fear any of the three? What need one care for them—one who has a stout heart—especially when the reward of his courage is gold, and enough of it to make a grand lord out of a poor Indian?”

“And of a negro as well?”

“Without doubt.”

“Say, rather,” rejoined Clara, with an air of discouragement, “that gold could serve neither one nor the other. Black and Indian, both are slaves, and our masters would soon take it from us.”