"Here's another, and another, and another," I said.

"Yes, plenty," he replied rather hoarsely, as he picked up a couple more pieces.

"Place them in your pocket, boy." As he spoke he looked about him up and down, and ended by uttering another sharp exclamation, for in one place there was a rugged patch of rock just like the fragments we held, and seeming as if the cliff-side there was one solid mass.
"Look here, Sep," he said quietly; "be smart, and gather up all the rough pieces of common grey slate you can find and throw them about here I'll help." I set to work and he aided me vigorously, with the result that in a short time we had hidden the bright metallic-looking patch, and then he laid his hand upon my arm.
"That will do," he said.

"Now, keep a silent tongue in your head.

I'll talk more to you afterwards.