118 Mr. Coorer’s Observations on Comets. 
time. The apparent right ascension and declination are determined by the differ- 
ences from the apparent places of the compared stars on the night of observation. 
The sources from which were derived the places of the compared stars, are referred 
to in the last column of all, except that of Gambart’s or Biela’s Comet, where 
the fourth column gives this information. All the stars with Brorsen’s Comet, of 
February 26th, were determined by the meridian circle. The dates without 
places signify that we have made observations, but have not yet the stars of com- 
parison. 
EDWARD J. COOPER. 
MarkREE CastLe, 
July 3, 1846. 
