An idea came to Bob.
"Come to our door, little girl, and see if you can draw back the bolt. We are fastened in."
"Will you take me to my papa?"
"Yes; I will try to."
The child came to the door, and, following Bob's directions, with some difficulty slipped back the bolt.
"Clip," said Bob, in a tone of triumph, "We're free. Now do as I tell you, and we'll get away, and reach St. Louis ahead of the boat."
CHAPTER XXXIII. A LUCKY ESCAPE.
"Now," said Bob to the little girl, as they descended the steep and narrow staircase, "will you do as I tell you?"