“And this?” said Mr Temple.

“Granite, sir.”

“Eight; and this?”

“Gneiss,” replied Will.

“Quite correct. Now this,” he continued, breaking a piece of stone in two with his hammer.

“Cop—no, only mundic,” cried Will, who had nearly been caught tripping.

“Right again. Now this?”

He picked up a reddish piece of stone which, when broken, showed bright clear crystals, and close to the ruddy stone a number of little black grains.

“Tin,” cried Will eagerly; “and a rich piece.”

“Let me look at the tin,” cried Arthur eagerly; and the piece being handed to him, “where?” he cried; “there’s no tin here.”