Exclamations of astonishment and wonder broke from the lips of the two lads. The professor grasped them, one with either hand, and stopped them abruptly.
“We can’t go farther on foot,” he said.
“Eh? Why not?” asked the Texan, in surprise. “Look at that floor! Wouldn’t it be great to dance on! It’s smooth as glass and——”
“You would get your feet wet if you attempted to dance on that,” declared Zenas.
“What? Why—why, it’s water!”
“Exactly.”
“But—but it looks black everywhere except where the light strikes directly on it.”
“Because no other ray of light reaches this place.”
Dick stooped and dipped his hand in the water, which reached to their very feet.
“Well, this is worth seeing!” he declared.