When I brought it up, I could tell, even in the twilight, that something dark and unwholesome floated there. I plunged a hand into the icy water and pulled it back at once, having touched the fur of a dead rat that had contrived to fall in and perish, though how, with the cover in place, I could not think. Then I realized that I had left it off, in the morning, distracted when Caleb had appeared. Someone else must have replaced it later in the day.
