Mary Kingsley, "Black Ghosts" (1897)

What purpose does the story at the beginning of the article serve? Why does Kingsley include it?

Is it important that the "ghost" is not really a ghost at all? How does this tie in with Kingsley's last insistence that African "myths" and stories are rational?

What is the tone of this article? Why is it that way? Look at the Griffith chapter to see what tone is.