The moon shone full in his face and showed the tear-streaks and the tired droop to his lips.
The Kid thought he must be going wrong, because at the ranch the moon came up in another place altogether.

He knew about the moon.

Doctor Dell had explained to him how it just kept going round and round the world and you saw it when it came up over the edge.

That was how Santa Claus found out if kids were good; he lived in the moon, and it went round and round so he could look down and see if you were bad.

The Kid rubbed the tears off his cheeks with his palm, so that Santa Claus could not see that he had been crying.