oh and I meant to correct my mangled quotes: it should read "hurried" not harried, and "have quit" not 'had quit', which latter one looks odd now I read it again. And the stage direction is actually 'On a ship at sea; a tempestuous noise of thunder and lightning heard' - "Hast thou, spirit, performed to point the tempest that I bade thee?" asks P of Ariel a bit later.