33 



No. 43. The eight day groups oTNo. 42 have been t'urtlier grouped together, 

 according to their weights, by extending the interval, before and after the date, 

 to 27 and 28 days respectively. The following hst contains the groups. For 

 the interval of 56 days, each observation is used seven times in seven consecu- 

 tive groups. 



FIFTH GEOCENTRIC NORMAL PLACES. FIFTY-SIX DAY GROUPS. 

 CORRECTION OF THE PRECEDING EPHEMERIS, FROM MERIDIAN OBSERVATIONS ONLY. 







Obs.- 



-Enh. 



No. 



Obs- 



-Eph. 



No. 





Date. 



R, 



.A. 



Obs. 



94 



Dec." 



+ 0".31 



Oba. 



1846 



, Sept. 26 



— 



0".28 



'^82 





Oct. 4 



— 



.09 



117 



+ 



.45 



99 





" 12 



+ 



.14 



160 



+ 



.58 



134 





" 20 



+ 



.12 



208 



+ 



..55 



171 





" 28 



+ 



.15 



218 



+ 



.56 



180 





Nov. 5 



+ 



.20 



219 



+ 



.66 



180 





" 13 



+ 



.22 



193 



+ 



.74 



159 





" 21 



+ 



.27 



170 



+ 



.77 



139 





" 29 



+ 



.20 



147 



+ 



.73 



122 





Dec. 7 



— 



.23 



104 



+ 



.63 



87 



1847 



, July 27 



— 



.58 



42 



+ 



.16 



39 





Aug. 4 



— 



.63 



50 



+ 



.16 



47 





" 12 



— 



.68 



60 



+ 



.16 



54 





" 20 



— 



.72 



65 



+ 



.19 



60 





" 28 



— 



.87 



59 



+ 



.37 



52 





Sept. 5 



— 



.71 



52 



+ 



.32 



64 





" 13 



— 



.78 



56 



+ 



.46 



60 





" 21 



— 



.66 



49 



+ 



.52 



55 





" 29 



— 



.71 



40 



+ 



.42 



47 





Oct. 7 



— 



.89 



55 



+ 



.47 



46 





" 15 



— 



.81 



55 



+ 



.67 



55 





" 23 



— 



.92 



. 61 



+ 



.81 



53 





" 31 



— 



.91 



53 



+ 



.90 



54 





Nov. 8 



— 



.91 



36 



+ 



.77 



49 





" 16 



— 



.66 



41 



+ 



.81 



35 





" 24 



— 



.44 



37 



+ 



.98 



36 





Dec. 2 



— 



.07 



27 



+ 



.85 



22 





" 10 



— 



.02 



22 



+ 



.62 



17 





" IS 



— 



.53 



13 



+ 



.48 



13 



No. 44. By means of the normal Ephemeris obtained by applying the cor- 

 rections of No. 43, Neptune's place has been used to determine the normal 

 mean places, for January 1, 1847, of the fixed stars, which have been compared 

 with Neptune in the equatorial instruments provided with filar-micrometers. I 

 subjoin the list of these eleven stars, from a to I inclusive, with the final 

 authorities for their mean places. The same |)rinciple of rejection of results 

 difl'ering 6" from the mean has been continued. Equal weights are given to 

 those retained. I am aware that some of the instruments and observers were 



