Much business appertaining;"[517:B]

and, on relinquishing his art, he says, that

—— "deeper than did ever plummet sound,

I'll drown my book;"[517:C]

whilst Caliban, conspiring against the life of his benefactor, tells Stephano, that, before he attempts to destroy him, he must

—————————————— "Remember,

First to possess his books; for without them

He's but a sot, as I am, nor hath not

One spirit to command."[517:D]

Though we perceive the effect of Prospero's spells, the mode by which they are wrought does not appear; we are only told that silence is necessary to their success:—