“I’ll sing out all right when I’m tired,” Bob assured him.
About fifteen minutes later they were again brought to a halt by another shot.
“That’s the 38 again,” Jack said.
“And there’s the answer,” Bob said in a low tone as two more shots rang out.
“That makes it look like a signal.”
“Nary doubt of it.”
“Those shots sounded to me about the same distance away as before,” Jack declared. “Now I sized it up before that one was to the east of us and the other to the west, and that seems to me to mean that they must be going about parallel to us and in the same direction. How does it strike you?”
“Right at home. Now why don’t they meet as soon as they can?”
“Evidently because they’re going to the same place by two routes.”
“Head of the class for you.”