There I couch when owls do cry.
On the bat's back I do fly,
After summer merrily:
Merrily, merrily, shall I live now,
Under the blossom that hangs on the bough."[525:A]
That all these elementary spirits were agents only on compulsion, and their obedience the result solely of magic power, is evident from the conduct of Ariel, and the language of Caliban; the former repeatedly asking for liberty, and the latter declaring, that "they all do hate him, as rootedly as I."
It is equally clear, from various parts of this play, that each class had a period prescribed for its operations: thus Prospero threatens Caliban, that
———————————————— "urchins
Shall for that vast of night that may work,
All exercise on thee;"[525:B]