Episode 15.nbsp;'For reasons that remain obscure Watt was, for a time, greatly interested, and even fascinated, by this matter of the dog, the dog brought into the world, and maintained there, at considerable expense, for the sole purpose of eating Mr. Knott's food, on those days on which Mr. Knott was not pleased to eat it himself, and he attached to this matter an importance and even a significance, that seemed hardly warranted.'nbsp;