“But,” I cried, “surely the whole experience of the human race is not to be set aside on account of a single sketch”⁠—I had turned over the leaves and ascertained that there was nothing more in the book⁠—“a single sketch by a wandering American artist who may have done it under hashish, or in the delirium of fever, or simply in order to gratify a freakish imagination. You can’t, as a man of science, defend such a position as that.”

For answer the Professor took a book down from a shelf.

“This is an excellent monograph by my gifted friend, Ray Lankester!” said he. “There is an illustration here which would interest you. Ah, yes, here it is! The inscription beneath it runs: ‘Probable appearance in life of the Jurassic dinosaur Stegosaurus. The hind leg alone is twice as tall as a full-grown man.’ Well, what do you make of that?”

He handed me the open book. I started as I looked at the picture. In this reconstructed animal of a dead world there was certainly a very great resemblance to the sketch of the unknown artist.