-554f Longitude of Tale-College. 



When the meridian was fatisfactorily determined, an 

 object was placed in view, nearly two miles diftant, by 

 which the inftrument might afterwards be eafily adjus- 

 ted at pleafure. 



The day of the eclipfe was remarkably fine. Scarce a 

 cloud was to be feen, the whole time the fun was above 

 the horizon. There was little or no wind, to difturb 

 our obfervations. One of us was ftationed at the clock ; 

 while the other was looking at the fun, through a three 

 feet reflecting telefcope. The eclipfe was perceived, al- 

 moft, if not quite, at the inftant of its commencement. 

 The time of the end was obferved, with no lefs exact- 

 nefs. 



The rate of the clock was determined, by obferva- 

 tions on the meridian tranlits, of the fun, and of the 

 fixed ftars, on that and the preceding and following 

 days. It was found to lofe eight feconds, in twenty- 

 four hours. The paffage of the fun, acrofs the meri- 

 dian, on the day of the eclipfe, was very carefully ob- 

 ferved with the tranfit inftrument. The time, by the 

 clock, was llh — 54' — 9.5" 



The following were the obfervations of the beginning 

 and end of the eclipfe, 



h. m. s. 

 Beginning, by the clock, - - - - O 38 22 



Clock slower than the sun, _ _ - 5 50.5 



Allowanct for the rate of the clock, - - 0.2 



Apparent time of beginning, - _ _ 



Time of end, by the clock, _ - . 



Clock slower than the sun, - _ - 



Allowance for the rate of the clock, 



Apparent time of end, - - - - 3 51 56.8 



To find the latitude of the place, the meridian alti- 

 tude of the fun, was repeatedly taken, with an Equa- 

 torial Inftrument, containing a telefcope of 18 inches 

 focus. The mean of twelve obfervations, was very 

 nearly 41 '^ — 18'. The latitude is taken at this, in the 

 following calculations 5 and the reductions of parallax 



