Note 58 — PART II. MOTION OF COMETS THROUGH THE SYSTEM.
Reading edition
Thus, the Comet of 1759, by reason of its retrograde motion, moved through 41° of longitude and 4° of latitude in the space of twenty-four hours; and the Comet of 1472, likewise retrograde, no less than 120° in the same interval. The Comet of 1821, observed by Captain Basil Hall at Valparaiso, described in the space of three months an arc of nearly 300° round the sun.