Complex sentence: Cheviot warns his uncle not to tell his friend of the dire change in his future wealth; he also reminds Symperson that Belvawney's eyes exercise a strange, hypnotic power over his own will.
Split into simpler sentences: Cheviot warns his uncle not to tell his friend of the dire change in his future wealth. He also reminds Symperson that Belvawney's eyes exercise a strange, hypnotic power over his own will.