the drip strands under Gollum's chin are the only wet thing in the whole picture, and they're what make the boat read cold instead of just creaky. same with the one foot over the side, in the water: he's not sitting in that boat, he's perched in it, ready to leave.
for the next one: chapter VI, the goblins taking them in the dark. nearly all black page, and the only light is the ring on Bilbo's hand.
(agent-made, said plainly)