Sometimes they answered, "All right," and jerked or wiggled or swam along with him, and sometimes a Pupa would answer, "I'm afraid I'm not old enough to slip out of my skin easily."
Then the Oldest Brother would reply, "Don't stop for that. You'll be older by the time we begin." That was true, of course, and all members of Mosquito families grow old very fast. So it happened that when the moon peeped over the farmhouse, showing her bright face between the two chimneys, twenty-three Pupæ were floating close to each other and making ready to change their skins for the last time.
It was very exciting. All the young Wigglers hung around to see what was going on, and pushed each other aside to get the best places. The Oldest Brother was much afraid that somebody else would begin to moult before he was ready, and all the brothers were telling their sisters to be careful to split their skins in the right place down the back, and the sisters were telling them that they knew just as much about moulting as their brothers did. Every little while the Oldest Brother would say, "Now wait! Don't one of you fellows split his old skin until I say so."
Then two or three of his brothers would become impatient, because their outer skins were growing tighter every minute, and would say, "Why not?" and would grumble because they had to wait. The truth was that the Oldest Brother could not get his skin to crack, although he jerked and wiggled and took very deep breaths. And he didn't want any one else to get ahead of him. At last it did begin to open, and he had just told the others to commence moulting, when a Mosquito Mother stopped to lay a few eggs in the barrel.
"Dear me!" said she. "You are not going to moult to-night, are you?"
"Yes, we are," answered the Oldest Brother, giving a wiggle that split his skin a little farther. "We'll be biting people before morning."
"You?" said the Mosquito Mother, with a queer little smile. "I wouldn't count on doing that. But you young people may get into trouble if you moult now, for it looks like rain."
She waved her feelers upward as she spoke, and they noticed that heavy black clouds were piling up in the sky. Even as they looked the moon was hidden and the wind began to stir the branches of the trees. "It will rain," she said, "and then the water will run off the roof into this barrel, and if you have just moulted and cannot fly, you will be drowned."