"You know, Rowan, why I came to Brinton, to the swamp, to investigate the rumors we had heard of great bones and skeletons existing in the slime of that swamp. And in the week I spent investigating the morass I found that the rumors had spoken truly, for here and there inside the edges of the morass I found great bone-fragments which could only come from dinosaur skeletons. Then, a week after I had begun my search, the thing happened. "I was working with my probing-rod, perhaps a mile inside the swamp, when there was a sudden distant crashing of trees and I saw a gigantic, slate-colored bulk rolling across the forest toward me. Before I could recover from my amazement the thing was on me, a great brontosaur ridden by one of the lizard-men--a gigantic dinosaur out of the Mesozoic age, crashing through an Illinois swamp! Before I could gather my stunned wits another had crashed toward me from beyond it, and in an instant I was the prisoner of the lizard-creatures, who fettered my hands and feet, crashed back on the great brontosaurs with me toward that mound at the swamp's center, where there yawned the opening of the great shaft. Up and down that shaft moves the great disk-platform, endlessly, and on it they brought me down to this cavern world, down to this gray city of theirs and into this building. And here, first, I was examined by three of their number who seemed to hold positions of authority among them. "For hours the three examined me, striving to converse with me in their rasping tones, endeavoring to make plain to me the elementary word-sounds of their strange language. That language, I found, is a phonetic one, but aided by gestures and written diagrams we were able to attain to a rough exchange of ideas. And partly through their own questions, partly through what I had seen in the great cavern outside, I came to understand who and what these enigmatic creatures were, and where they had originated.