disturbed by the force of circumstances, was re-established of itself after rather more than fourteen and a half centuries: the opening of the civil year became identical with the beginning of the astronomical year, and this again coincided with the heliacal rising of Sirius, and therefore with the official date of the inundation. To the Egyptians of Pharaonic times, this simple and eminently practical method was unknown: by means of it hundreds of generations, who suffered endless troubles from the recurring difference between an uncertain and a fixed year, might have consoled themselves with the satisfaction of knowing that a day would come when one of their descendants would, for once in his life, see both years coincide with mathematical accuracy, and the seasons appear at their normal times. The Egyptian year might be compared to a watch which loses a definite number of minutes daily. The owner does not take the trouble to calculate a cycle in which the total of minutes lost will bring the watch round to the correct time: he bears with the irregularity as long as his affairs do not suffer by it; but when it causes him inconvenience, he alters the hands to the right hour, and repeats this operation each time he finds it necessary, without being guided by a fixed rule. In like manner the Egyptian year fell into hopeless confusion with regard to the seasons, the discrepancy continually increasing, until the difference became so great, that the king or the priests had to adjust the two by a process similar to that employed in the case of the watch.