the other that they actually hold images of the body, simulacra, likenesses, like a sort of ghost within the polished surface. He doesn't address it much, but I think it must be the same constellation of beliefs that has vampires show no reflection and ghosts appear as noonday shadows: some external cast of the soul

This is a great constellation of beliefs, quite compelling. There is a kind of reality, an experiential reality to this, which continues to have force.