While Jack was telling the boy what terrible fellows the Yankees were supposed to be, he had slowly and solemnly filled a goblet with water from the pitcher, and then in the same solemn and deliberate way drew forth his ditty-bag and took from it a small bottle containing a harmless-looking white powder known to the druggists as citrate of magnesia. He held it at arm's length as if he were afraid of it, and that made Julius so weak with terror that he could scarcely keep his feet.

"Do you want to know what—look out for yourself, now! If it explodes when I remove the cork, look out! Do you want to know what this is?" said Jack. "Then I must whisper the words to you, for it would never do to say them out loud. It is my enchanted looking-glass—my fetich—my voodoo charm."

That was too much for Julius. With a wild scream he jumped for the door; but it was locked, and he could not get out.

"Now watch," continued Jack, who knew that he would get at the truth of the whole matter in a minute more. "To begin with, I shall command my enchanted looking-glass to show me the likeness of the villain who stole that breastpin; and in the next, I shall tell it to show me the place where it is now. Now, stand by to look in and tell me who you see there."

He poured a small portion of the white powder into the goblet, whose contents at once began to bubble and boil in the most unaccountable manner. When the water boiled up to the top and ran over on the wash-stand, Jack commanded Julius to look in and tell him what he saw there; but the boy sprang away and curled himself up on the floor in the farthest corner of the room.

"Come here!" said Jack sternly. "You won't? Then I'll look myself. Ah! What is this I see? Julius, come here this instant and tell me who this is."

Jack emphasized the order by taking the negro by the back of the neck and lifting him to his feet; but he soon found that he could not hold him there without the use of more strength than he cared to put forth. Julius was like an eel in his grasp. As fast as he raised him from the floor he would somehow manage to slip back again; and all the while he begged and pleaded so loudly that Jack was forced to desist for fear that his mother would hear the uproar, and come to the door to ask what was the matter.

"You are afraid to look in that goblet and you dare not sit in the chair," said Jack at length. "That proves that you did take the pin. Now where is it? If I have to fill my enchanted glass again, I'll make you look in it whether you want to or not. Where is it?"

[Illustration: THE ENCHANTED LOOKING-GLASS.]

"De oberseer got it," was the reply that made the sailor wonder whether he was awake or dreaming. "Suah's you born, de oberseer done made me gib it to him."