"Then, Señora, they would misconceive that authority," the politic prelate hurriedly replied. "It is well for all Christendom, to drive the Infidels from the Holy Land; but for Castile it is better to dispossess them of Granada. The distinction is a very plain one, as every sound casuist must admit."

"This truth is as evident to our reason," added Ferdinand, casting a look of calm exultation out at a window, "as that yonder towers were once Abdallah's, and that they are now our own!"

"Better for Castile!" repeated Isabella, in the tones of one who mused. "For her worldly power better, perhaps, but not better for the souls of those who achieve the deed—surely, not better for the glory of God!"

"My much-honored wife, and beloved consort"—said the king.

"Señora"—added the prelate.

But Isabella walked slowly away, pondering on principles, while the eyes of the two worldings she left behind her, met, with the sort of free-masonry that is in much request among those who are too apt to substitute the expedient for the right. The queen did not return to her seat, but she walked up and down that part of the room which the archbishop had left vacant when he approached herself and her husband. Here she remained alone for several minutes, even Ferdinand holding her in too much reverence to presume to disturb her meditations, uninvited. The queen several times cast glances at Mercedes, and, at length, she commanded her to draw near.

"Daughter," said Isabella, who frequently addressed those she loved by this endearing term, "thou hast not forgotten thy freely-offered vow?"

"Next to my duty to God, Señora, I most consider my duty to my sovereign."

Mercedes spoke firmly, and in those tones that seldom deceive. Isabella riveted her eyes on the pale features of the beautiful girl, and when the words just quoted were uttered, a tender mother could not have regarded a beloved child with stronger proofs of affection.

"Thy duty to God overshadoweth all other feelings, daughter, as is just," answered the queen; "thy duty to me is secondary and inferior. Still, thou and all others, owe a solemn duty to your sovereign, and I should be unfit for the high trust that I have received from Providence, did I permit any of these obligations to lessen. It is not I that reign in Castile, but Providence, through its humble and unworthy instrument. My people are my children, and I often pray that I may have heart enough to hold them all. If princes are sometimes obliged to frown on the unworthy, it is but in humble and distant imitation of that Power which cannot smile on evil."