A moment later, he sprang with one leap into the water and dived to the very bottom of the pond.
The water was deliciously cool and grateful to his thick, rough skin, and the Frogman swam around the pond several times before he stopped to rest.

Then he floated upon the surface and examined the pond with The bottom and sides were all lined with glossy tiles of a light pink color; just one place in the bottom where the water bubbled up from a hidden spring had been left free.

On the banks, the green grass grew to the edge of the pink tiling.

And now, as the Frogman examined the place, he found that on one side of the pool, just above the water line, had been set a golden plate on which some words were deeply engraved.

He swam toward this plate, and on reaching it read the following inscription: _This is_ THE TRUTH POND _Whoever bathes in this water must always afterward tell_ THE TRUTH.
This statement startled the Frogman.