230 



ON THE ACCURACY OF THE TABULAR LONGITUDE OF THE MOON. 



Date of 

 Observation. 



Errors of Ermrs of 



Plana's | New 



Co- Efficients. iCo-Efficicnts 



June 7 



8 



11 



12 



15 



July 7 



8 



11 



12 



13 



15 



16 



Aug. 5 



7 



9 



9 



11 



12 



13 



15 



18 



31 



Sept. 1 



2 



4 



5 



6 



12 

 13 

 15 

 29 

 Oct. 1 

 o 



3 



8 



10 



ii 



12 



13 



14 



15 



29 



Nov. 2 



3 



5 



7 



11 



14 



15 



Dec. 1 



3 



8 



10 

 11 

 20 



Remarks. 



Both limbs observed. 



Both limbs observed. 



