about six o'clock
And nevertheless , there was no means of denying the increase of his disquieting feverishness . He returned from his expeditions each time with his eyes more brilliant . He was paler , more animated , more irritable . One evening he left the post about six o'clock , at the end of the greatest heat of the day . We waited for him all night . My anxiety was all the stronger because quite recently caravans had brought tidings of bands of robbers in the neighborhood of the post . At dawn he had not returned .