From the month of April, the Nile begins imperceptibly to rise; the swell becomes strong and visible in the moon after the summer solstice, (Plin. Hist. Nat. v. 10,) and is usually proclaimed at Cairo on St. Peter's day, (June 29.) A register of thirty successive years marks the greatest height of the waters between July 25 and August 18, (Maillet, Description de l'Egypte, lettre xi. p. 67, etc. Pocock's Description of the East, vol. i. p. 200. Shaw's Travels, p. 383.)