two o'clock
Imogene was on the floor , dancing not merely with unabated joy , but with a zest that seemed only to freshen from dance to dance . If she left the dance , it was to go out on her partner 's arm to the supper-room . Colville could not decently keep on talking to Mrs. Bowen the whole evening ; it would be too conspicuous ; he devolved from frump to frump ; he bored himself ; he yawned in his passage from one of these mothers or fathers to another . The hours passed ; it was two o'clock ; Imogene was going out to the supper-room again . He was taking out his watch . She saw him , and `` Oh , do n't ! '' she cried , laughing , as she passed .