twelve o'clock
Doubtless he was impressed , too , by the importance of the occasion . He proceeded to call over the lists of candidates for the different examinations in a fidgety manner , very unlike his usual self , and then turning abruptly to the class , said : `` The Mathematical Medal candidates will remain here for examination . The English Literature and Nightingale Scholarship candidates will be examined in the Sixth Form room . Boys not in for either of these examinations may go to their studies till the twelve o'clock bell rings . Before you disperse , however , '' -- and here the Doctor grew still more fidgety -- `` I want to mention one matter which I have already mentioned in the Sixth . I mention it not because I suspect any boy here of a dishonourable act , but because -- the matter being a mystery -- I feel I must not neglect the most remote opportunity of clearing it up . '' What on earth was coming ?