She crept up the stem of the nearest plant and sat in the air for a few minutes, eating her lunch and resting. Next she walked down the stem until just the end of her body was in the air. She stood so, with her head down, then gave a little jerk and dove to her home. As she jerked, she crossed her hindlegs and caught a small bubble of air between them and her body. When she reached her home, she went quickly in the open doorway and let go of her bubble. It did not fall downward to the floor, as bubbles do in most houses, and there were two reasons for this. In the first place, there was no floor. In the second place, air always falls upward in the water. This fell up until it reached the rounded ceiling and had to stop. Just as it fell, a drop of water went out through the open doorway. The home had been full of water, you know, but now that Mrs. Spider had begun to bring in air something had to be moved to make a place for it.