MEASUREMENT OF AN ARC 



i AQUIL^E. 



» / 



Nearest point on the Jjimb^ 1 30 & 



|j 1811. 



Face. 



Observed 



Zenith distance. 



Correction. 



Correct 

 Zenith distance. 



Thermometers. 



Month. 



- 



Upper. 



Lower. ' 



May 10 

 14 

 15 



W. 



E. 



W. 



/ // 



1 30 15.5 j 

 1 .30 24,38 

 1.30 16 



7+ 

 31.48 

 32.16 

 32.30 



/ // 



1 30 46.98 

 1 30 56.54 

 1 .3.0 48.30 



Mean 



o 



82 

 77 



82 



o 



82 

 77 

 82 



80.37 



78.03 



y AOUIL/E. 



o / 



Nearest point on the Limb^ 4 5$ S, 



: 







4- 







; 



May 1 



E. 



4 56 9.13 



52.44 



4 57 1.57 



78 



83 



2 



W. 



4 55 58.63 



52.57 



4 56 51.20 



76 



76 



4 



E. 



4 56 8.63 



52.86 



4 57 1.49 



77 



77 



5 



W. 



4 56 2.63 



53.00 



4 56 55.63 



80 



80 I 



7 



E. 



4 56 9.00 



53.29 



4 57 2.29 



80 



80 



3 10 



W. 



4 55 59.13 * ' 



53.75 



4 56 52.88 



80 



80 



1 11 



E. 



4 56 8.63 



53.92 



4 57 2.55 



81 



80 



1 12 



W. 



4 55 59.63 



54.07 



4 56 53.70 



84 



83 



15 



E. 



4 56 7.13 



54.56 



4 57 1.69 



Mean 



81 



81 



79.67 



80 



ATAIR. 



Nearest point on the Limb^ 6 45 S. 



I 





' ■ 



+ 









1 May 5 

 I 7 



W. 



6 42 57.24 



•58.02 



6 43 55.26 



80 



80 



E. 



6 43 10.12 



58.31 



6 44 8.43 



80 



80 



I 8 



W. 



6 42 57.74 



58.46 



6 43 56.20 



80 



80 



9 



E. 



6 43 6.24 



-58.61 



6 44 4.85 



80 



80 



10 



W. 



6 42 54.87 



58.76 



6 43 53.63 



79 



79 



11 



E. 



6 43 6.99 



58.91 



6 44 5.90 



81 



80 



12 



W. 



6 42 54.25 



-69.08 



6 43 53.33 



84 



83 



15 



E. 



s 



■ 6 43 5.37 



•59.56 



6 44 4.93 



Mean 



81 



81 



80.63 



80.37 



