"They feed the little bean just as the pea does. But they do even more. What do you think they will do when the sun goes down and the air gets cool?"
[Illustration: Sprouting bean.]
"Oh, I know." said Donald. "I've seen them lots of times. They just shut together tight." "And that keeps the little bud you see in there as warm as you are in your bed."
"Isn't that wonderful?" said Susie. "Why, uncle, it's just as if they could think!"
"The leaves drop off after a while," said Donald. "I often see them lying on the ground."
"Yes," said Uncle Robert. "When the plant is strong enough to take care of itself, their work is done."
"Are there any other plants that make leaves out of the seeds, uncle?" asked Donald.
"Oh? yes," replied Uncle Robert. "Squashes and pumpkins do, and many others. Some have more perfect leaves than these. Let us look at the morning glories by the porch."
[Illustration: Morning glory.]
"They come up every year by themselves," said Susie.