340 



MEASUREMENT OF AN ARC 



REGULUS. 



i ■ '■ - ' ' > ■ . 



Near eft point on the Limb, 2 15 $• 



J 1311* 





Observed 





Correct 



Thermometers. 



1 — 



Face. 



Zenith distance. 



Correction. 



Zenith distance. 







Month, 









/ // 

 1 12 47.51 







Upper* 



Lower. 



1 April 18 



w e 



115.48 



8 / a 

 • 2 10 52.03 





 86 





 86 



I 20 



E. 



«S:l? 58.89 



U5 36 



- 2.11 03.53 



84 



84 



S 21 



W. 



2 12 45.76 



115 29 



2 10 50.47 



83 



83 



I 22 



E. 



2 12 59.89 



115 23 



2 1 1 04.66 



86 



86 



23 



W. 



2 12 44.76 



115.16 



2 10 49.60 



83 



83 



24 



E. 



2 12 58.89 p 



115.09 



2 11 03.80 



91 



91 



25 



W. 



2 12 44.87 " 



115.X33 



" 2 10 49.84 



91 



91 



1 26 



E. 



2 12 58.24 



114.97 



2 11 03.27 



93 



92 



27 



w. 



2 12 44.74 



114.90 



2 10 49.84 



95 



94 



f 28 



E 



2 12 58.87 



114.83 



2 11 4.04 



94 



94 



I 29 



w. 



2 12 46.87 



114.77 



2 10 52.10 



93 



93 



: SO 



E. 



2 12 57.62 



114.71 



2 11 2.91 



Mean 



92 



92 



1 



89.25 



89.08 



! 



- ■: 



. r 



IS 



■ 



L3 



April 



20 



E. 





21 



W. 





22 



- E- 



. 



23 



w. 





24 



E. 





25 



W. 





26 



E 





27 



w. 





28 



E. 





29 



w. 





30 



E. 



May 



4 



W. 









: 



.e.c 



* LEONIS. 



\ . h. EJ 



)int on the LimU, 









•.•:', 



3 £ 



■ 



k 







9 



} ■ 





% 



20. 



AC 



21 29 



21 40 

 21 28 

 21 40 

 21 28 

 21 43 

 21 30 

 21 40 

 21 29, 

 21 40, 

 21 29. 

 21 38. 



26 

 2§ 

 .13 

 .13 

 .28 

 .13 

 .13 

 .13 

 .63 

 51 

 ,13 

 76 



126.54 



; 1-26 > 45 



126.35 



126.26 



126.16 



126.07 



125.98 



125.88 



125.79 



125.70 



125. 60 



125.23 



1 23 

 1 23 



1 23 



1 21 



1 23 



23 



23 

 23 

 23 

 23 

 23 

 23 



35.80 



46.71 

 31.48 

 46.39 

 34.44 

 49.20 

 36.1 I 

 46.01 

 35.42 

 46.21 

 34.73 

 43.99 



M 



ean 





80, 



82 



85 



sslL 



89 

 88 

 91 

 93 

 93 

 90 

 90 

 90 



87. 75 



8a 



85 

 81 

 89 

 88 

 91 

 S3 

 93 

 90 

 90 

 90 



87.67 



