The answer is 'his hair turns grayer' - that is the physical change which took place in the spirit of Christmas present from when he first appears in the story to when he leaves.
Answer:
Your search - "A Noiseless Patient Spider." This poem was written by Walt Whitman, the famous and ... - did not match any news results.
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Here are a few genres the story falls under:
•Adventure
•Coming-of-Age
•Fable