“It’s going to be difficult to make this out,” remarked Jim, after close scrutiny. He sat down upon a rock and began studying it, with the other boys looking over his shoulder.

“That crooked line must mean a creek,” said Jo.

“I think it represents the top of a ridge,” remarked Tom.

“This other work of art below the ridge-creek appears to me to be a pine tree with a cross on one side of it.”

“You are right, Skipper,” said Jeems. “I got as far as that tree, but that was my limit. I could not make any headway beyond that.”

“It looks to me as if that design further down were a pathway with a mill of some kind on one side and a cabin a little further down.”

“Good head, Tommy,” said Jim patronizingly. “But what are those stars near the end of the line?”

“They represent a snow storm, I guess,” said Jo.

“Oh, they do!” said Jim. “I suppose that is a hint it will be winter before we find anything. But what do these numbers below the stars mean? 400 — + 1500 — 30. Is that yards, feet, dollars, or doughnuts?”