How did I know it?
says you.

Simply because I am a trained observer.

The sign that I saw him make, ten thousand would have missed; and perhaps--_perhaps_, I say, because he's a hard man to judge of--but perhaps he never made another.

A strange thing to consider! It was this.

One day I came to him: 'Hermiston,' said I, 'there's a change.' He never said a word, just glowered at me (if ye'll pardon the phrase) like a wild beast.