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EXAMPLE. 



January 5th, 1789. The meridians of Greenwich, and of 

 the obfervatory of Trinity College, Dublin, (eftimated longi- 

 tude 25'. 18". weft of Greenwich) were obferved to apply 

 fucceffively to as Aquilss and the 3)'s firft limb at the following 

 intervals of A. R. in fydereal time. 



Greenwich. Observatory, T. C. D. 



asAquilas 19H. 40'. 32". 15 a Aquilae 19H. 40'. 52", 8. 

 ysiftlimb I, 40. 8. 50 ysiftlimb i. 41. 26, 3. 



Apparent difference of A. R. at Greenwich 5H. 59' 36", 35. Clock 



moving nearly fydereal time. 

 Apparent difference of A. R. at Obfervatory, T.C. D. 6H. o'. 33", 5 



Dedud for clock's rate 2, 6 



6. o. 30, 9 

 Apparent difference of A. R. at Greenwich 5. 59. 36, 35 



Appar. change of A. R. in the interval of meridians o. o. 54, 55 



Corredion from Table I. i» 90 



True change of A. R. in the interval 



52,65 



Chan 



ge 



