pocket. "There is one long piece of board, and one short one nailed to
the end--so," drawing it on the paper.

"Oh, that's easy enough made," said Donald. "We can do it ourselves
right here in the tool house."

"Let's make it to-morrow, Don," said Frank.

"It must be set up some place with the upright end turned toward the
south, so that just at noon the shadow of the short piece may fall
straight on the board. By drawing a line across the board at the top of
the shadow and marking the date on it, we can tell how the length of the
shadow changes."

"Uncle," asked Donald, "when it is winter here, is it summer in some
other part of the world?"

"Yes," was the reply, "and now that our summer is coming, the people
there are beginning to have winter."

"Then," said Frank, "when it gets cooler here in the fall it is growing
warmer there, and that would make their spring come in September,
wouldn't it? Do you see, Susie?"

[Illustration: Eskimo scene.]

"Yes," answered Susie, "but it seems all mixed up. I thought it was the
same as it is here all over the world."

"Oh, I didn't," said Donald. "I've read about countries where it is