eye had been at rest at B, and the molecule of light had come to it in the direction D, B. The star, therefore, whose real place is at C, will appear at D to the spectator at B. This effect is precisely analogous to what takes place when a person moves or travels rapidly through a shower of rain or snow in a perfectly calm state of the atmosphere. Without locomotion the rain-drops or snow-flakes will fall upon his hat, or upon the head of the carriage that conveys him, and not beat in his face, or against the front windows of the carriage. But if he is passing along swiftly, in any direction, east, west, north or south, the rain or snow will come in contact with his face, or enter the front windows of the carriage if they are open, as though the drops or flakes fell obliquely, and not from the zenith. Now as an object appears to us in the direction in which the rays of light strike the eye, it is easy to understand that a star in the zenith will appear at a little distance from it, to a spectator carried along with the earth in its orbit. This discovery established the fame of Bradley, who was exonerated from all future payments to the Royal Society on account of it; and it is of great importance, as the only sensible evidence we have of the earth’s annual motion. Soon after his appointment to the Greenwich observatory, he effected his second great discovery, that of the nutation of the earth’s axis, a slight oscillation of the pole of the equator about its mean place, describing an ellipse in the period of eighteen years. He determined likewise its cause, which theory had previously inferred to be the action of the moon upon the equatorial regions of the earth. Some idea of his industry may be formed from the fact, that in conjunction with his nephew, he made no less than eighteen thousand observations in a single year while astronomer royal; and the number from the year 1750 to 1762 amounted to upward of sixty thousand. The death of Bradley was interpreted as a Divine judgment by the populace. He had taken an active part with the Earl of Macclesfield and others, in urging on and assimilating the British calendar to that of other nations. This rendered it necessary to throw eleven days out of the current year in the month of September 1752—a measure which the ignorance of great numbers of the people led them to regard as an impious intermeddling with the Divine prerogative. Lord Macclesfield’s eldest son, at a contested election for Oxfordshire, was greeted with the cry from the mob, “Give us back the eleven days we have been robbed of!” and Bradley’s mortal sickness, some years later, was viewed as a punitive dispensation for having participated in the sacrilegious theft.