"All right, Ise ready to do my share."
"I am going to jump down on his back. You follow me with the gun."
"I will, Massah Jack."
The surgeon continued to pace the floor of the cabin, and, watching his chance, Jack crawled to the edge of the loft opening.
Just as Dr. Mackey swung around on his heel our hero gave a nimble leap and landed squarely on his shoulders, sending the surgeon to his knees.
"Hi, what's this?" spluttered the rascal, and tried to throw Jack off. But our hero clung as fast as grim death.
"It means that you are now my prisoner, Dr. Mackey."
"You!" ejaculated the astonished man. "Let me go, I say!" And he began to struggle more violently than ever.
But by this time Old Ben was on the floor, and the negro lost no time in poking the muzzle of the gun under the surgeon's nose. This brought Dr. Mackey to a standstill, and he glared at his opponents in amazement.
"Don't—don't shoot!" he gasped.