"See," said Donald, "the roots grow from the same place that the stem does. I should think it would be better if one came from one side of the pea, and one from the other." "What becomes of the rest of the seed?" asked Uncle Robert. "I don't know," said Susie. "Is it of any use?" "It is of the greatest use," replied Uncle Robert. "The little pea plant couldn't live without it. It is its food that the mother sweet pea gathered last summer from the soil and air, and stored away in the little round ball for her baby to feed on until it should be big enough to get its own food." "Do you really mean, uncle," cried Susie, with shining eyes, "that the sweet peas I have planted in that bed are the children of those I had last year?" "Why not?" asked Uncle Robert, with a smile. "I never thought of it before," said Susie, looking at the tiny plant in her hand; "but I like it. It seems just like a family." "And that's what it is," said Uncle Robert. "Don't you think this baby had better go back to bed?" said Susie, making a deep hole in the ground. "Wait a moment, Susie," said Uncle Robert. "Suppose we take it for a visit to the beans, and see if they grow like it." So they went to the vegetable garden, where they found a great many plants, each with two strong, thick leaves sticking through the soil. Some were quite green and showed a tiny shoot between them. Others were yellow, with only the tips turned green. "Dig one up, Don," said Susie, "and let's see if it is like the baby pea." Donald pulled one up, but no bean was to be seen. The stem grew straight into the ground, ending with a little bunch of roots. "Where's the bean?" asked Susie. "These two leaves must be the bean," said Donald. "Don't they look like it?" He took a bean from his pocket and held it close to the little plant. "Well, I never!" cried Susie. "If those two leaves aren't just the bean split open! Are they any good that way, uncle?" "Yes, indeed," said Uncle Robert, smiling. "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.