The countess smiled, and, as she locked the door of her laboratory, her spirits revived and her thoughts once more reverted to the ambitious dreams of the morning. When she had reached her boudoir again, and the complaisant mirror had resumed its place, she drew the flask from her bosom, removed the glass stopper, inhaled for a moment its perfume, and then, raising it to her lips, drained the contents to their last drop.

"And this philter is to make me mistress of your heart, King Louis!
How I long to begin my reign!"

A slight rustling was heard outside, and the guilty woman trembled anew. She concealed the phial, and listened breathlessly, while her straining eyes were fixed upon the door as though they had hoped to see through its panels of oak whether friend or foe stood without.

A slight knock was heard, and now, in spite of herself, the Countess de Soissons grew pale and shivered. What if the myrmidons of Louvois had come with a lettre de cachet! What if—No! not even HE would go so far in his enmity to the niece of the great cardinal, the relative of the reigning Duke of Savoy, and the daughter-in-law of the Princess Carignan.

So she summoned resolution enough to cross the room, draw back the bolt, and to say in a loud, imperious tone: "Come in."

The door opened, and admitted a young man. The countess no sooner recognized him than she smiled, and, with a slight elevation of her shoulders, said, "Nobody but you."

"Nobody but me," replied the youth, sadly. "I come to ask of my gracious mother an interview."

CHAPTER III.

PRINCE EUGENE.

The countess inclined her head in token of assent; but, as she did so, her eyes rested on the diminutive form of her son with an expression that savored of disdain. The look was unmotherly, and seemed to say, "How can a man of such insignificant appearance be the son of the stately Countess de Soissons?"