five o’clock
`` He was irritable and depressed . He seemed to be awaiting a message which did not come . His excitement hindered him from working , he scarcely did anything the entire afternoon . Finally at five o'clock a messenger boy came with a letter for him . I saw that Winkler turned pale as he took the note in his hand . It seemed to be only a few words written hastily on a card , thrust into an envelope . Winkler 's teeth were set as he opened the letter .