about six o'clock
Thirteen years ' difference was there in the ages of the Fairy Sisters , and not a soul save those who knew them in former days on the frontier would have suspected it . Mrs. Frank in evening dress did n't look over twenty . One lovely evening early in August , just about the time that Cadet Captain Latrobe began to show well to the front in the run for the prize , the two sisters had gone to their room at the hotel to dress for the hop . It was their custom to disappear from public gaze about six o'clock and when they came floating down the stairs in filmy , diaphanous clouds of white , the halls were well filled with impatient cavaliers in the natty cadet uniform , and with women `` waiting to see . '' Then the sisters would go into the dining room and have some light refreshment , with a glass of iced tea -- and no matter how torrid the heat or how flushed and dragged other women might look , they were inviting pictures of all that was ever fresh , cool and fragrant . The two fluffy blonde heads would be huddled close together a minute as they studied the bill of fare , and virtuous matrons at other tables , fanning vigorously , would sniff and say : `` All for effect . They know that supper bill by heart .