"Maybe it's a treasure!" answered Chubbins, his eyes big with interest.

"MAY BE IT'S A TREASURE"

"Well, Chub, we can't get it, anyway," said the practical Twinkle; "so let's climb the mountain."

She got down from her seat and approached the door, and as she did so she struck a small bit of rock with her foot and sent it tumbling down the hill. Then she stopped short with a cry of wonder, for under the stone she had kicked away was a little hole in the rock, and within this they saw a small golden key.

"Perhaps," she said, eagerly, as she stooped to pick up the key, "this will unlock the iron door."

"Let's try it!" cried the boy.

[Chapter II]