- Artists who go crazy
- Letters written by women in the late 1800s that are interwoven with the plot
- Sketches and letters hidden away somewhere, discovered by the main character
- The idea of slashing a painting's canvas (as a dream in one, as an attempt in the other)
I'll keep the list updating as I read. But as I said before, I don't mean it critically, precisely. And The Drowning Tree mentions a greyhound's silky ears - you can't beat that.