it was saying , `` 'if that is the case , ' said the king , stroking his beard and frowning till clouds filled the sky and lightning flashed , 'you w ' '' see to it that my entire land is freed of flies by this time day after tomorrow or- ' `` `` all we 've got to do , '' said paul , `` is open it up- '' he shut the bard off again and was prying at its front panel as he spoke .