The steep slate-quarry, and the great echo flap

And buffet round the hills, from bluff to bluff.”

Tennyson listened attentively. When I spoke the last line he shook his head and said:

“No!”

“Surely that is correct?” I said.

“No!” There was in this something which I did not understand, for I was certain that I had given the words correctly. So I ventured to say:

“Of course one must not contradict an author about his own work; but I am certain those are the words in my edition of the poem.” He answered quickly:

“Oh, the words are all right—quite correct!”

“Then what is wrong?” For answer he said:

“Have you ever been on a Welsh mountain?”