The doctor recounts "Papa's" final moments. The old dictator was raving about everything and even said he'd destroy the world—which is apparently something Bokononists say before they commit suicide.
Dr. Koenigswald goes to a basin of water to wash his hands. The water freezes around his hand, so he does what any curious fellow would do in the situation. He licks it.
He falls to the ground, shattering into frozen human chunks.