When he heard this, Lorenzo turned pale, for he did not love this midnight errand to the wizard's chamber.

"But no man is here," said the wizard.

A low hoarse laugh came from the man who sat. "Tricks of the trade, tricks of the trade!" said he; and Antonio started to hear his voice. "Be sure that where a prince, a courtier, and a cheat are together, the devil makes a fourth. But there is no need to turn pale over it, Lorenzo."

When the wizard heard, he fell on his knees; for he knew that it was Duke Valentine who spoke.

"Look you, fellow," pursued His Highness, "you owe me much thanks that you are not hanged already; for by putting an end to you I should please my clergy much and the Syndic of Baratesta not a little. But if you do not obey me to-night, you shall be dead before morning."

"I shall not die unless it be written in the stars," said the wizard, but his voice trembled.

"I know nothing of the stars," said the Duke, "but I know the mind of the Duke of Firmola, and that is enough for my purpose." And he rose and began to walk about the chamber, examining the strange objects that were there; and thus he came in front of the mirror, and stood within half a yard of Antonio. But Lorenzo stood where he was, and once he crossed himself secretly and unobserved.

"What would my lord the Duke?" asked the wizard.

"There is a certain drug," said the Duke, turning round towards the wizard, "which if a man drink—or a woman, Lorenzo—he can walk on his legs and use his arms, and seem to be waking and in his right mind; yet is his mind a nothing, for he knows not what he does, but does everything that one, being with him, may command, and without seeming reluctance; and again, when bidden, he will seem to lose all power of movement, and to lack his senses. I saw the thing once when I sojourned with the Lord of Florence; for a wizard there, having given the drug to a certain man, put him through strange antics, and he performed them all willingly."

"Aye, there is such a drug," said the wizard.