[CHAPTER IX.]
BACK TO THE CANAL.
"There's only one man down there, mate, so far as I can see," announced Ferral presently. "He's waving a bunch of burning grass on the end of a stick."
"Is he an officer?"
"He's got on a policeman's uniform."
"Then I guess it will be safe for us to go down."
The descent continued, and the Hawk hovered above the place where Graydon was standing.
"Don't bring that fire near the air ship, Graydon!" Matt called. "Put it out and then come alongside and we'll help you into the car."
The officer did as directed, and was soon in the air ship with Matt and Ferral. The young motorist started on again toward the canal.
"It was a big surprise to me to see this air ship," said Graydon. "Harris was scared to death thinking something had happened to it, and to you boys. We rushed out here from South Chicago in an automobile, and——"