`What did he say, Bruno?' Sylvie enquired, as soon as we were safely out of hearing.

`I think he said "All of me that isn't Bone-disease is Rheumatism." Whatever are that knocking, Sylvie?'

Sylvie stopped, and listened anxiously. It sounded like some one kicking at a door. `I hope it isn't that Porcupine breaking loose!' she exclaimed.

`Let's go on!' Bruno said hastily. `There's nuffin to wait for, oo know!'