four o’clock
`` I should be delighted to oblige any friend of your Highness , '' answered the chemist slowly , `` but , unfortunately , in this instance I have orders from an authority not to be disputed . '' `` What orders ? '' demanded the Princess . `` I promised the analysis at four o'clock to-morrow , and at that hour it will be ready for the young lady . I am ordered not to show the analysis to anyone before that time . '' `` Those orders came from the Director of Police , I suppose ? '' The chemist bowed low , but did not speak .