...of those which are in a domestic state. • * ' It is between the nineteenth and the twenty-second 1 day of their existence that they undertake the great...butterfly •which is to come out; by the aid of the juice with which it is moistened the humid threads give way to its efforts, and it releases itself from its...

...twenty -second day of their existence, that they undertake the great work of spinning their cocoon. They curve a leaf into a kind of cup, and then form...as large and nearly as hard as a hen's egg ! This cocoon has one end open like a reversed funnel ; it is a passage for the butterfly, which is to come...