I. Observations of the eclipse of the Sun on the 16th of August, 1765, made at Colombes, near Paris, at the observatory of the Marquis of Courtenvaux, 5' 13, 8" north of the Royal Observatory, and 20" 1/3 in time to the east. By M. Messier, Astronomer, Keeper of the Journals, Plans, and Maps belonging to the Marine of France,

Abstract

The sky was almost continually overcast for many days, and very little hopes were left about this eclipse; yet it having in part cleared up on the afternoon of the 16th, I observed the beginning and several phases of it. I had settled the going of an excellent clock, regulated according to mean time, by corresponding altitudes of the sun taken the 14th, 15th, 16th and 17th of August, and by the meridian transits taken by an instrument, of five feet focus, on the 12, 13, 14, 15, and 17. so that no doubt remained about the motion of this clock, which was extremely regular.