200 



ASTRONOMICAL and 



on the bank of the weftern branch, the following obfer- 

 vations were made to determine the longitude. 



Means 22 20 24 37 



tant add 10" 



22 20 24 59 



62 2 28 



The ohfen'ed times, and dulances of the Q's and B 's neareft limbs. 



Dift. of the limbs. 



The firft and third fols of obfervations were made to determine the 

 error of the \vatches and their rate of going. By the firft fet of obfer- 

 vations watch N". 1 appeared to be too flow 13" and N". 2 too fall 9". 

 By tlie third fet made about 444 minutes after the firft, the watch N°. I 

 was too flow 23 ' and N°. 2 too faft 6" — hence N°. 1 loft 10" in 444- minutes 

 and N". 2 loft 3" nearly in fame time. The errors of the watches reduced 

 to the time of tlie lunar obfervation and applied to it will give 22^ ai"" 2' 41" 



for 



