I picked up one of my oar-locks and laid it on the stain and it just covered it.

So I saw I had damaged the book when I had it before.

That's one thing you're not supposed to do--damage books out of the library.

If you keep a book till its overdue, that isn't so bad, because then you just pay a fine.

Connie says that's being a good bookkeeper.
But to damage a book--g--o--o--d night!.