"And Davy is the garden-pea and you the sweet-pea, is that it? Well, they did come a long way--that is true--and they do belong to a very large family. Why, even the clover belongs to the Pulse family, and the peanut, and the locust, and the laburnum, and there is one distant branch of the family that is so modest and sensitive that at the least touch its members shrink and hide, and these are called sensitive plants." "Aren't beans of the Pulse family, too?" asked Davy. "Why do you think so?" asked the Chief Gardener. "Well, I remember that the flowers are something alike, and then they both have pods." [Illustration: A MEMBER OF THE PULSE FAMILY] "And you are right, Davy. Both the flowers are what is called butterfly-shaped, and pods of that kind are called legumes. Whenever you see a flower of that shape, or a pod of that kind, no matter how small or how large, or whether they grow on a plant or a tree or a shrub, you will know you have found one of the Pulse family and a relative of the pea. Your scarlet runners are about second cousins, I should think, and I have something to tell about them, too, but it is too late this evening." IV BEANS AND MORNING-GLORIES TWINE TO THE RIGHT "MY morning-glories are climbing! My morning-glories are climbing up the strings!" "And so are my scarlet runners! Two of them have gone twice around already, and one of them three times! But oh, Papa, something has broken one of my stalks of corn, right off close to the ground!" It was two days after the strings had been put up, and Prue and Davy had tried very hard not to look at their garden during all that time. Then they just had to look, and found that the beans and morning-glories were really starting up the strings. But what could have happened to Davy's corn! The Chief Gardener hurried down to see. Then with an old knife he dug down into the pot a little, and up came, what do you suppose? Why, a white, fat ugly worm--a cut-worm, the Chief Gardener called him. "They are a great enemy to young corn," he said, "especially in cool weather. Sometimes almost whole fields have to be replanted. Blackbirds will kill them, but many times the farmer thinks the blackbird is pulling up his corn, and drives him away with a gun, when the blackbird is only trying to help the farmer." "Do you suppose there are any more?" asked Davy anxiously. The Chief Gardener dug carefully around the other stalk, until the white roots began to show. "No, I think your other stalk is safe," he said, "at least from cut-worms." Grown-up Prue came to see the gardens. Yes, the vines were really making a nice start, as well as the other things. One of Davy's pease had sent out some tiny tendrils that were reaching toward the slender twig-branches, but thoughtful Davy was looking first at his beans, then at Prue's morning-glories. "They all go around the strings just alike," he said at last; "all the same way. Why don't some go the other way?"