As the weather grew colder the Polyphemus Caterpillar hunted around on the ground for a good place for her cocoon. She found an excellent twig lying among the dead leaves, and decided to fasten to that. Then began her hardest work, spinning a fluffy mass of gray-white silk which clung to the twig and to one of the dry leaves and was almost exactly the color of the leaf. Other Caterpillars came along and stopped to visit, for they did not have to eat at cocoon-spinning time.
"Better fasten your cocoon to a tree," said a pale bluish-green Promethea Caterpillar. "Put it inside a curled leaf, like mine, and wind silk around the stem to strengthen it. Then you can swing every time the wind blows, and the silk will keep the leaf from wearing out."
"But I don't want to swing," answered the Polyphemus Caterpillar. "I'd rather lie still and think about things."
"Fasten to the twig of a tree," advised a pale green Cecropia Caterpillar with red, yellow, and blue bunches. "Then the wind just moves you a little. Fasten it to a twig and taper it off nicely at each end, and then----"
"Yes," said the Polyphemus Caterpillar, "and then the Blue-Jays and Chickadees will poke wheat or corn or beechnuts into the upper end of it. I don't care to turn my sleeping room into a corn-crib."
Just here some other Polyphemus Caterpillars came along and agreed with their relative. "Go ahead with your tree homes," said they. "We know what we want, and we'll see next summer who knew best."
The Polyphemus cocoons were spun on the ground where the dead leaves had blown in between some stones, and no wandering Cows or Sheep would be likely to step on them. First a mass of coarse silk which it took half a day to make, then an inside coating of a kind of varnish, then as much silk as a Caterpillar could spin in four or five days, next another inside varnishing, and the cocoons were done. As the Polyphemus Caterpillars snuggled down for the long winter's sleep, each said to himself something like this: "Those poor Caterpillars in the trees! How cold they will be! I hope they may come out all right in the spring, but I doubt it very much."
And when the Cecropia and Promethea Caterpillars dozed off for the winter, they said: "What a pity that those Polyphemus Caterpillars would lie around on the ground. Well, we advised them what to do, so it isn't our fault."