120 Mr. Herschel's account of a series of observations 



Calculation of the observations of the 2 1 st. 

 1st. Combination. All the observers jointly. 



A 



17 47 32*10 



18 7 40*95 

 18 17 30*30 



»8 37 4075 

 18 57 43*90 



-A. 



B 



9^39°24s*7o 



9 49 3270 

 10 9 38 .60 



10 19 26-40 



10 39 33 *20 

 10 59 33*30 



B' 



9''54"'5o'*4o 

 10 4 53-10 



10 14 51 '20 

 10 34 49 -60 



10 44 59 .40 



11 4 51 *8o 



9»'46>»38''*95 



9 56 4'- 50 

 10 6 39* 80 

 lo 26 38* 25 

 10 36 47* 90 

 10 56 41- 10 



C" 



9h 42" 



in 



■^ — ^ Z" 



17'' 38m56s-io 



Mean. 

 18 14 15*18 



A — B: 

 B'— C: 



C'-Z"= 



Mean. 

 10 16 If -49 



7 58 3*69 

 8 11*33 



Mean. 

 10 26 32-58 



B-B' = 



C'~C" = 



Mean. 

 10 18 21 '25 



— o 10 21 -09 

 +0 36 13-55 



Mean. 

 9 42 77 



Mean. 

 17 38 56 -lo 



Gain of Bon M. T.n + 0*0 1 

 C . . . —0*03 



8 6 15 *02 

 -7 56 48-40 



+0 25 52-46 

 Gain of mean on 



Sid. Time. 



9 26 *62 



—4-54 

 +0 *OI 



—0*03 



}- 



4*54 



o 9 22.06 



Corrected difference of Longitudes. 



Calculation of the observations of the asd. 

 1st. Combination. All the observers jointly. 



