“Teeth!” I cried, considering the iron bar with more attention.

Yes, indeed, those are the marks of teeth imprinted upon the metal! The jaws which they arm must be possessed of amazing strength. Is there some monster beneath us belonging to the extinct races, more voracious than the shark, more fearful in vastness than the whale? I could not take my eyes off this indented iron bar. Surely will my last night’s dream be realised?

These thoughts agitated me all day, and my imagination scarcely calmed down after several hours’ sleep.