■68 



MEASUREMENT OF AN ARC 



Observations at Purmae Station. 



Nearest 'point on the Limb, 1 45 South* 



1809 





Observed 





■ Correct 



I 



Thermometers. 



1 







Corrections. 



1 . ; 





1 



J 







Month. 



" " 



£=« 



Zenith -distance. 





Zenith distance 



Upper. 



Lower. 



April 12 



E. 



1 48 11.01 £ 



•1 5.14 



• 

 1 47 5.87 



o 

 84 



o 

 84 



14 



E. 



1 48 8.51 



1 5.08 



-1 47 3.43 



86 



85 



1 16 



W. 



1 48 1.26 



1 5.02 



1 46 56.24 



85 



.84 



17 



E. 



1 48 9.51 



1 4.919 



1 47 4.52 



84 



83 



18 



<3 W. 



1 47 58.76 ; 



1 4.96 



1 46 53.8 



85 



84 

 84 • 



• 19 



s w. 



.1 47 58.89 



• 1 4.92 



1 46 53.97 



84 



20 



• w. 



. .1 47 57.01 



1 4.89 



1 46 52.12 



84 



84 



23 



E. 



1 48 10.26 



1 4.73 



1 47 5.48 



83 



83 



24 



"W. 



1 47 59.26 



1 4.74 



1 46 54.52 



84 



*4 



.25 



: E. - - 



1 48 10.76 



1 4.72 



1 47 6.04 



85 



85 



26 



1 



W. 



1 48 1.26 



1 4.68 



- 



1 46 5S.58 



Mean 



87 



87 



84.6-J 



84.28 



i 





■ HTBMyE. 











Nearest point on the Ximl 



', 1. b South. 







April 12 



E. 



1 3 10.87 



1 7.53 



S 1 

 1 2 3.34 



8, 



\ 84 



13 



Wi 



1 2 57.74 



1 7.5 



1 1 50.24 



84 



1 83 



14 



E. 



1 3 9.24 



1 7.47 



1 2 1.77 



St 



i 85 



f 16 



W. 



1 3 1.74 



1"7.4~ 



1 1 54.34 



Si 



84 



17 



E. 



1 3 10.37 



1 7.36 



1 2 3.01 



8-1 



83 



18 



W. 



1 3 0.24 



1 7.33 



.1 1 52.91 



Si 



84 



19 



E. 



1 3 10.87 



1 7.30 



1 2 3.57 



84 



84 



20 



W. 



1 2 59.87 



1 7.26 



11 52.61 



84 



84 



21 



E. 



1 3 10.39 



1 7.23 



12 3.16 



81 



81 



I 23 



W_ 



1 3 1.87 



1 7.15 



1 1 54.72 



83 



83 



| 24 



E. 



1 3 10.24 



1 7.12 



1 2 3.12 



84 



84 



25 



■ W. 



1 2 59.37 



1 7.09 



1 1 52.28 



85 



85 



87 



26 



E. 



1 3 13.24 



1 7.05 



1 2 6.19 



Mean 



87 



L 



84 



.23 83.92- 



