James Edward Preston Muddock, The Sunless City — Chapter I (1905)
“ I repeat that the interior of the globe is inhabited. By what kind of beings I am not prepared to say. They may be monsters; they may be pigmies, or both; but that is a question I hope to be able to answer at some future day. Ladies and gentlemen, as the Creator has adapted a race of beings to exist on the surface of the earth, I fearlessly assert that He may have adapted a race to exist in the interior. ”
