“Were you?” I said, feeling very uncomfortable.

“Yes. What’s in the box?”

“I don’t know,” I said. “I thought it was blocks of metal, packed to send away.”

I hesitated before I said metal. I was going to say silver; but I felt, after my father’s words, as if I ought to be cautious.

“I believe I know what’s inside,” said my companion.

“Well, what?” I cried, as I tugged at another screw which refused to go round.

“New tools for the mine.”

“Why, of course!” I exclaimed. “Here: you go on. I can’t manage this screw. How stupid of me not to think of it!”

“There he goes!” said Bigley, giving the screw a good wrench. “How many more are there? I see: these two.”

He attacked them one after the other, talking the while.