four o’clock
`` He is working at the analysis now , I 'll warrant , '' whispered the Princess to her companion . In a short time Herr Feltz himself appeared . He greeted the Princess with most deferential respect , but seemed astonished to find in her company the young woman who had called on him a few hours previously with the Director of the Police . `` I wanted to ask you , '' said Jennie , `` to finish your analysis somewhat earlier than four o'clock to-morrow . I suppose it can be done ? '' The man of science smiled and looked at her for a moment , but did not reply . `` You will oblige my friend , I hope , '' said the Princess .