about eight o'clock
But for me there was one salient fact : of those three ruffians one was still at large , and no one seemed to have any knowledge of him . `` It was some four months later that I again caught up the scent . A certain Friday evening early in February found me listlessly tidying up the shop ; for the Jewish Sabbath had begun and customers were few . But about eight o'clock a man strode in jauntily , hung up his hat and seated himself in the operating chair ; and at that moment a second man entered and sat down to wait . I glanced at this latter , and in an instant my gorge rose at him . I can not tell why . To the scientific mind , intuitions are abhorrent .