"Just think, Bud," he murmured, "we're probably the first humans to set foot in this city in thousands of years!"

Bud murmured as he steadied himself on legs that were shaky with fright.

"Guess you're right," Bud murmured in a disappointed voice.

"Here are some keys," murmured Bud as he went through the man's pockets.

"Wonder what Tom is finding out about those crows," Bud murmured.

"It's a tunnel, all right," Bud murmured, aiming his beam ahead.

Bud murmured hoarsely, "Where in Jupiter did that baby come from?

Bud murmured, as he slid his rack over to a porthole window and glanced down at the receding ground.

"Makes you wonder what's waiting for us in there," Bud murmured.

Bud murmured, referring to the mysterious craft in which the space people had sent their infected animals.