S42 Observations on 



comet had advanced too near the fun, to be longer 

 viiible. I had found its place, from time to time, by 

 taking its diftance from fome of the principal fixed 

 flars, with a fextant, graduated to every ten feconds. 

 The time w^as given, by a v^ell regulated clock. To 

 diminifh the errours of obfervation, each of the dis- 

 tances was generally meafured ten or twelve times in 

 fucceflion, and a mean taken from the whole. The re- 

 quilite correcllons, for the refraction of the atmofphere, 

 were afterwards applied. The following are fome of 

 the obferved diftances. Two or three of the firft are 

 not probably very correft, as they were taken, when 

 the comet was fo near the horizon, as to render the 

 \iew of it obfcure, and the refraction uncertain. 



Sept. 



Oct. 



Nov. 



Dec. 



