“Afraid he isn’t home,” Bob said.
“I’ll try him again,” and once more Jack sent the call from his lips.
“How in the world would he know that it wasn’t a genuine bird?” Rex asked.
Bob smiled.
“Jack puts a peculiar touch to the last note which is the real signal between us and Kernertok. I doubt if any one else would notice it.”
“I should say not.”
For the third time Jack whistled and this time almost at once the call came back to them.
“He’s home,” Jack shouted.
“Sure’s pop. Come on.”
Before they had taken more than a dozen steps a dog came bounding toward them.