three o'clock
Flint heard it , but he paid no heed to the summons . He had forgotten what it was to desire food . A blur before his eyes , and an iron band about his head , occupied his attention to the exclusion of the outside world . By three o'clock the headache-fiend had entered into full possession , had perched itself in the centre of consciousness , and seemed to Flint 's excited nerves to be working its octopus claws in and out among the folds of his brain . Waves of pain vibrated outward to his ears and eyes . He watched the shade against the blindless window flap to and fro . Each streak of light admitted , struck the sufferer like a blow .