nine
o'clock sharp
A girl who does not know her lessons is apt to find herself seated at my left side . Now , my right side is sunshiny and pleasant ; but my left side faces due northeast . I think that will explain everything to you . We will meet in the schoolroom to-morrow at nine o'clock sharp . Now I must go . '' When Miss Tredgold had vanished the girls looked at each other . `` Her northeast side ! ''