“Nowhere else will you see such darkness,” came Dave’s voice, close at his side.

“But look! There’s something!” Johnny exclaimed in a low tone.

“Yes!” Dave’s voice rose excitedly. “And it’s something quite new!”

Johnny stared with all possible intensity. Before him—how far away he could not tell—there moved a series of small, round spots of yellow light. “It’s like flying through the air at night,” he murmured; “and seeing the lights of a huge Zeppelin passing.”

“Quick! Get your camera ready!” said Dave.

“All right—it’s all set!” Johnny’s own voice sounded strange to him.

“I’ll turn on the light,” said Dave. “Now!”

“One, two, three—” Johnny counted to ten, and closed the camera shutter with a click.

“Now! One more picture,” urged Dave. Another click. “They’re passing. They’ll soon be gone. If only it works!” Dave’s voice grew louder with excitement.

“There”, Johnny sighed. “That’s two pictures—I hope!”