"What tanks?"
"Don't you know? Haven't you ever been down there? In that jolly old cave under Old Bobby's house."
Esther felt a cold thrill creeping through her.
"I don't know what you mean," she said faintly.
"Well, you must be a precious ninny!" laughed Pickle, with a good-humored contempt; "fancy living here all these years, and not knowing that!"
"We haven't been here so very long," said Esther.
"Well, you've been here longer than we have anyhow. And we've found it out already."
She was shivering a little, yet was consumed by curiosity.
"Tell me about it," she said.