Four Stones up.
Two across.
"Do you understand it now, Harry?"
The latter scratched his head and looked about.
"I understand it well enough," he replied; "but there is one difficulty."
"What?"
"A tool."
"Let us try with our hands first," said Jack.
And so saying, he set to work himself to try as he suggested.
"One, two, three, four, and two up. Good! Now, Harry, lend a hand here. Come."