More on the different kinds of worm

I spoke earlier, in the first chapter of this book, about worms of the air. This class includes spiders, which, forever persisting in their work, even in winter hang their webs indiscriminately in men’s houses and in horses’ stables. ¹ This is when butterflies, too, hide themselves up under the roofs; these worms of many colours, red, white, violet, and speckled, ² are known in the Göta tongue as faedele. ³ If they are caught during the bitterest cold of winter and then released in warm places, they will soon flutter away like any other flies. Leaf-worms envelop themselves in a cocoon, like an immensely thick shell, in which they suspend themselves with their young all through the winter until, as the warmth of spring increases, they lose their lives, donating them to their progeny. ⁴