For Mario Bazzano was the hero of the young maiden's romantic adventures at Hounslow!

Katherine, with the ingenuous confidence of a sister, had revealed to her brother, and also to Isabella, the particulars of those strange meetings with the "handsome unknown," and had not attempted to disguise the impression made upon her heart by that individual,—an impression against which she had vainly endeavoured to struggle.

Thus, when those tokens of recognition were manifested alike by Mario Bazzano and Katherine Markham, both Richard and Isabella instantly divined the cause.

"Pardon me, your Highness," exclaimed the Castelcicalan officer, endeavouring to throw off the trammels of embarrassment, and speaking in excellent English; "but—that young lady—I think I have seen her——before——I——"

"Perhaps," interrupted the Prince, laughing. "At all events I will introduce her to you now—for she is my sister."

"Your sister, my lord!" cried Mario, in a tone which expressed some degree of vexation at this announcement—as if he dared not aspire to so near a relative of a personage of our hero's rank.

"Throw aside all ceremony with me, Bazzano," said Richard, shaking him warmly by the hand. "I am your debtor—deeply your debtor. You saved my life after the defeat of Ossore: your conduct was too generous—too noble ever to be lightly valued. But, say—was it near Hounslow that you have met my sister?"

And as he spoke, he glanced slily towards the blushing Katherine, who was half hiding her countenance behind Isabella.

"It was—it was!" exclaimed Mario. "And will your Highness be offended if I confess that your charming sister made a profound impression upon my mind? Although believing her to be only the daughter of the tenants of that farm-house near which I encountered her in her walks, I felt myself irresistibly attracted towards her! And,—but your Highness will laugh at my romantic dreams,—I determined to acquire the English language for her sake—that I might speak to her—that I might render myself intelligible to her!"

"We will give you an opportunity of convincing her of your proficiency in our native tongue, Mario," said the Prince, again smiling—but with kindness, and in a manner well calculated to reassure the young Italian officer, whom he led towards Katherine.