“My good uncle, if you will enter into the legion of speculation, I can discuss the matter no longer.”

“But I have to tell you that the highest names have come to the support of my views. Do you remember a visit paid to me by the celebrated chemist, Humphry Davy, in 1825?”

“Not at all, for I was not born until nineteen years afterwards.”

“Well, Humphry Davy did call upon me on his way through Hamburg. We were long engaged in discussing, amongst other problems, the hypothesis of the liquid structure of the terrestrial nucleus. We were agreed that it could not be in a liquid state, for a reason which science has never been able to confute.”

“What is that reason?” I said, rather astonished.