"I know that it is globe-shaped, Daisy, because it turns round and lets me see all sides of it."
"Is one side different from another."
"Only so far, as that there are spots here and there," Dr. Sandford went on, looking at the exceeding eagerness in Daisy's eyes. "The spots appear at one edge pass over to the other edge, and go out of sight. After a certain time I see them come back again where I saw them first."
"Oh, I should like to see the spots on the sun!" said Daisy.
"You said they were holes in the curtain, sir?"
"Yes."
"What curtain?" said Preston.
"You are not a philosopher," said the doctor.
"How long does it take them, the spots, Dr. Sandford, to go round and come back again?"
"A little more than twenty-five days."
"How very curious!" said Daisy. "I wonder what it turns round for the sun, I mean?"