... ' Fraught with warm vapours, and the people's hue ' Burned dark by suns: and 'tis in time of spring, ' When first are thawed the snows, that ice-fed streams ' In swollen torrents tumble; but the Nile ' Nor lifts his wave before the Dog star burns; ' Nor seeks again his banks, until the sun ' In equal balance measures night and day. ' Nor are the laws that govern other streams ' Obeyed by Nil...