eight o'clock
He put the `` searching medicine '' safely away in his desk at the office , and went to work , his heart warmed by the pleasant consciousness that he had done a good deed . When he went home at night , Miss Mattie was partially awake and inclined to be fretful . `` The strength is gone out of my medicine , '' she grumbled , `` and it ai n't time to take more . I 've got to set here and be deprived of my sleep until eight o'clock . '' Roger prepared his own supper and induced his mother to eat a little . When the clock began to strike eight , she took two of the flour-filled capsules , confidently climbed upstairs , and -- such is the power of suggestion -- was shortly asleep . -LSB- Sidenote : Favourable Opportunity -RSB- Having an unusually favourable opportunity , Roger went over to see Barbara .