12 



RECORD AND RESULTS OP 



Sidereal time at mean noon 13'' 45" 38'.5; the sidereal time is converted into 

 mean time, and AT is the chronometer correction on mean local time. 



T 







h 





t 





aT 



W 00" 



56' 



42° 



23' 



58" 



66° 43' 



37" 



—48-" 57^ 



10 03 



08 



42 



17 



39 



67 15 



39 



—49 01 



10 06 



03.5 



42 



08 



39 



C8 01 



10 



—48 55 



10 08 



34.5 



42 



01 



04 



68 39 



26 



—48 54 



10 11 



04.5 



41 



53 



54 



69 15 



31 



—49 00 



10 12 



52.5 



41 



48 



17 



69 43 



38 



—48 56 



10 m 



54 



41 



42 



19 



70 13 



31 



—48 58 



10 17 



14 



41 



35 



35 



70 47 



14 



—49 03 • 



10 19 



34.5 



41 



28 



17 



71 23 



40 



—48 58 



10 21 



35 



41 



22 



27 



71 52 

 Mean 



47 



—49 03 





—48 58.5 + 0^.7 



Observations for time, October 31, 1860. 



Index 



+ 32' 00" 



Double altitudes of a Lyrae 



—29' 20"? f +1' 40" 

 —28 50 S I +1 40 



with reflecting; circle. 



2* 

 84° 34 



16 



08 



01 



, (60" 

 (40 



{I 



{i 



+ 32 20 

 Pocket chronometer 



9* 08" 26= 



09 26 



10 40 



11 29 



12 57 



14 02 



15 12 



16 39 



18 13 



19 15 



T = + 1.05, B = 27'".744 at 34^: 



r = — l' 10" 8 and ?-j = — 1' 13". 7 



g= +38° 39' 33". 3 



a= 18" 32" 13". 2 



Sidereal time at mean noon 14'" 40" 5013 



I'ty tn" ~l' ?n"? Mean correction + 1'23".8 

 ( +1 40 — 40 ^ 



10 



[00 

 '20 



10 

 [60 



40 

 (60 

 140 

 (30 

 140 



83 55 1^2 



(20 



47 



36 



-{ 



I20 



:2o 

 20 



40 



Pocket clironometer 



gh 21'n 2P 



22 23 



23 23 



24 20 



25 52 



27 22 



28 48 



29 43 



30 47 



31 30 



2* 



00 lY' J40' 

 " ^^ 140 



{i 



12 



05 



00 



82 50 



41 



Index 



+ 32' 



+ 32 



30" —28' 20 

 40 —28 20 



'} 



60 



20 



40 



40 



20 



20 



40 



60 

 (40 

 1 20 

 (60 

 140 

 (40 

 120 

 (40 

 (20 

 (60 

 (40 



+ 32' 20" —28' 00" ■) 

 + 32 20 —27 40 I 



27 

 21 

 15 



Mean correction + 2' 11 ".2 



T 





h 







t 





aT 



9" 08" 56^ 



42° 



15' 



42" 



67° 



25' 



26 



—49" 



13' 



9 11 04.5 



42 



09 



29 



67 



56 



53 



—49 



16 



9 13 29.5 



42 



02 



18 



68 



33 



00 



—49 



17 



9 15 55.5 



41 



55 



24 



69 



07 



43 



—49 



24 rejected 



9 18 44 



41 



46 



32 



69 



52 



19 



—49 



15 



9 21 52 



41 



37 



16 



70 



38 



40 



—49 



18 



9 23 51.5 



41 



31 



11 



71 



08 



51 



—49 



16 



9 26 37 



41 



22 



46 



71 



51 



07 



—49 



14 



9 29 15.5 



41 



14 



45 



72 



30 



59 



—49 



15 



9 31 08.5 



41 



09 



00 



72 



59 



35 



—49 



13 



Moan . . . —49 15,2+0^7 



Hence rate of pocket chronometer between October 17 and October 31, ST^ — 1."2 



