"And they do, Davy," said the Chief Gardener. "A plant that doesn't like a place will not grow in it, and in the woods and fields we only find those plants together which like that particular spot. Down below the hillside yonder you will find golden-rod and several kinds of tall blue and white daisies and grasses that all belong there, and seem very happy together. They would not grow well in the wet woods, and would soon die out, but there are other plants that grow and tangle and are happiest where the ground is damp and the shade overhead. So, you see, there we have another way that plants are like people--they have their proper company, and, perhaps, their societies and friendships. I am sure they have their friendships, for there are certain little plants, and big ones, too, that you will nearly always find together. Violets and spring-beauties and adder-tongues must love each other, I am sure, for you seldom see one without the others, and there are certain vines, like the Virginia creeper and the poison-ivy, that are nearly always together, though why the Virginia creeper should care for the poison-ivy I don't see. Perhaps it doesn't seem poison to the creeper, but only to us." "It seemed poison enough to me," said Davy, "when I got a dose of it last year. It nearly itched me to death." [Illustration: "BEWARE OF THE VINE WITH THE THREE-PART LEAF"] "Yes, it is terrible stuff, and little folks, and big ones, too, have to be very careful, for it looks very much like its friend, the creeper, only that its compound leaf is divided into three parts instead of five. You can always tell by that, and you must always _beware of the vine with the three-part leaf_." "Do poison-ivy and Virginia creeper belong to the same family?" asked Davy. "No, though they look so much alike. The poison-ivy belongs to the Sumach family, while the creeper belongs to the Grape family. The families are quite close together, but are separate. Often members of different families are better friends than members of the same family, and that is still another way that plants are like people." "Do you suppose the poison-ivy knows that it is poison?" asked Prue, who liked to believe that plants were really _just_ like people. "Perhaps it does. We can never be quite sure how much a plant knows. I told you once how I believed they could feel and hear, and even see. I am almost sure that the dandelion can reason." Davy looked interested, and the Chief Gardener went on.