When the Oldest Dragon-Fly Nymph felt that the wings under her skin were large enough, she said good-bye to her water friends, and crawled slowly up the stem of a tall cat-tail. All the other Dragon-Fly Nymphs crowded around her and wished that their wings were more nearly ready, and the larvæ talked about the time when they should become Nymphs. The Oldest Nymph, the one who was going away, told them that if they would be good little larvæ, and eat a great deal of plain food and take care not to break any of their legs, or to hurt either of their short, stiff little feelers, they would some day be fine great Nymphs like her. Then she crawled slowly up the cat-tail stem, and when she drew the tenth and last joint of her body out of the water, her friends turned to each other and said, "She is really gone." They felt so badly about it that they had to eat something at once to keep from crying.