343 



MEASUREMENT OF AN ARC 







■ 



1 







1811. 



Left Arc. 



1811. 







i 



Right Arc. ; 



M E A N. 



■ Mon ill. 



Month. 



April ' ' M' 



Z© 



j May 1 

 i ' 



: " " S 



8 

 — — - 



o , „ 



2 <?3 12.45' 

 2 2 3 15.73 

 2 23' 14.53 '• 

 2 13 13.96 

 ""'2 23 14. 10 

 2 -2S -12.74 



April 25 

 *i7 

 30 



May 2 



4 



S r ". 

 2 22 59.82 : 



2.2.1 3.71 



2 2.1 4.88 ! 



2 23 3. ,7 



2 2? 3. !0 



Moan, 



Refraction, &(£. .... 



Zenith distance, *_ ... 



2 23 85 

 ■4- 2 19 



2 23 10 99 



7 

 Moan 



2 23 3.19 



j 



j Mean 



2 23 13.90 



2 23 3. '0 





? aquil^e 



May 14 



i 30 56.54 



May 10 

 15 



Mean 



I 'iU 46. 9H 





j 30 62.09 







i> e • b 







1 30 4n.30 



IveirantiQ'', etc. .. ... 



Zenith (l^Fla-tce. ...,.„. , 



-p > .53 





Mean" 



I 30 56.54 



1 30 47 64 



1 3'.> 53.62 



J 



r AQUILiE. 



!c 



■ ' . ". 



' 



1 Wf ' 



i 4 

 1 7 

 ! 15 



4 57 

 4 57 

 4 57 

 4 57 

 4 57 



1.67 

 1.49 

 2.29 

 2.55 

 1.69 



May 2 



5 



10 



12- 



1 Mean 



4 55 61.20 

 4 56 55.63 

 4 56 52.88 

 4, 56, 53.70 



.VJ( an. 

 ftefrac 



Zenith 





4 50 57.03 

 -f 4.91 



Uol>. &C 



distance, »«,._ 



4 57 2.54 





1 Mean 



4 57 



1.92 



4 56 53 35 







ATAIR. 



May 



7 



9 



10 



12 



Mean 



6 44 3.43 



6 44 4.86 



6 44 5.90 



6 44 4.93 



6 44 6.03 



May 



8 

 II 

 15 



Mean 



43 oa.'io' 



6 43 56 20 



6 43 63.63 



6 43 5?. 33 



6 43 5 4.f)() 



Aiciiii. . 6 -1 » Q0.3i 



Infraction, &C. . . -f. 6.87 



Zenith distance, ..... .. 6 44 7.19 



May 9 

 12 



15 



Mean 



1 10 25.49 



1 10 28.59 



1 10 25.46 



1 10 26.52 



j 





May l(j 



14 



i to i 0.1 4 

 1 10 19.53 



1 10 17 84 



.Wean, ...' '1 Ju It 18 



Refraction, &c + 1.22 



; 



Zenith distance* .... 1 10 23.40 



' ' p Tn i m.. ». .wH| | fa (i >. 



