She was a little pale and was feeling more timid than she liked to say. Up above them, even now, they could see the sky lighted up by the red flame. It looked as though a city must be on fire. The path wound in a roundabout way, but was always rising and was in some places very steep and rocky.

"See that red stream of lava pouring down the side of the mountain," said Arthur.

It was not so far away but that the children could see men at work beside it. They were scooping the lava up into vessels. It would be taken down to Naples and made into jewelry and ornaments to be sold to visitors in the city.

After two miles or more of hard climbing, they reached the side of the crater.

"Don't go too near. Oh, do be careful, children," cried Mrs. Gray. She was trembling as she looked at the red-hot stones flying upward in the midst of the cinders and flames.

"Listen, do listen, mother. It is grand!" said Lucy, as they could now hear the roaring and grumbling, the pounding and hammering under ground. It was as though some terrible being was an angry prisoner in the volcano and was trying to free himself.

Tessa clung to Mrs. Gray's skirt at first. She was frightened, too, and it was no wonder. But after a few moments both she and her kind friend had got over their fright and had begun to enjoy the strange sight.

"IT WAS A STRANGE PLACE"

When at last Mrs. Gray said it was time to go, they all felt sorry.