"So be it," replied Ambroise. "I must have most perfect quiet around me; so leave me, if you please, gentlemen. For the sake of being sole master for the moment, I assume the sole responsibility."

For some moments Catherine neither spoke nor moved. She had withdrawn to a window, and was looking out into the courtyard, where there was a great commotion; but in the crisis that was approaching, no one beside herself paid any heed to the tumult without.

All others, even the chancellor himself, had their eyes riveted upon Ambroise Paré, who had resumed the cool demeanor of a great surgeon, and was making ready his instruments.

But just as he was leaning toward François, the uproar came nearer, and seemed to be in the adjoining hall. A bitter and joyous smile played about the bloodless lips of Catherine. The door was violently thrown open; and the Constable de Montmorency, in full armor, appeared threateningly upon the threshold.

"I arrive most opportunely," cried the constable.

"What means this intrusion?" demanded the Duc de Guise, laying his hand upon his sword.

Ambroise Paré had no choice but to stay his hand. Twenty gentlemen accompanied Montmorency, and poured into the chamber after him. At his side were Antoine de Navarre and the Prince de Condé. Moreover, the queen-mother and L'Hôpital joined them. There was no longer any hope of maintaining the mastery even by force.

"In my turn," said Ambroise Paré, hopelessly, "I withdraw."

"Master Paré," cried Mary Stuart, "I, the queen, command you to proceed with your operation!"

"But, Madame," replied the surgeon, "I told you that most perfect quiet was necessary! and you see!" he added expressively, pointing to the constable and his train.