“Yes, yes; but I don’t mean your book, my lad. I mean the geography and knowledge in your head. Don’t you remember that the farther we go north at this time of year the lighter it becomes, till, not many miles farther, it will be all daylight?”
“Yes, I remember now,” cried Steve; “but it’s rather puzzling, all that about the midnight sun. Doesn’t the sun really set at all?”
“No,” said Captain Marsham, smiling at the lad’s puzzled expression.
“Then what does it do?” said the lad, gazing hard in the direction of the north-west, where there was still a warm glow.
“Keeps up above the horizon.”
“But that’s what puzzles me,” said Steve.
“Well, I hardly know how to explain it to you, my boy, unless you can grasp it if I ask you to suppose you are standing on the North Pole.”
“Yes, I understand that. Wouldn’t the sun set there?”
“No; but at midsummer day it would be at a certain height above the horizon.”
“Yes; but how would it be at midsummer night?”