348 Mr. South' s re-examination of the apparent distances 



No. XX. R. A. 16^ 4" ; Decl. 14° 1' N. 



49 Serpentis ; I. 82 ; H. and S. 221. 



continued. 



,^ ^JPassy; June 19, 1825 ; Seven-feet Equatorial. 



. \ 8th and 8| magnitudes. 



Position = 48° s^'np\7 Obs. I DifF. = i° 28' 7 Tolerably steady 

 Distance = 3".soo | 5 Obs. | DifF. = o".s29 j ^ oieramy steady. 



Observed on the meridian with 181 ; results satisfactory. 



Mean Result. 



Position 48° 10' np (20 Obs.); Distance 3".5oi (20 Obs.); 



Epoch 1825.41. 



The change in this star since the last observations is such 

 as to confirm the direction of its motion ; but the quantity is 

 more than calculation w^ould give, amounting to no less than 

 6° 13', instead of 1° 6'. This renders it probable that the 

 measures of 1823 are erroneous,* and that Mr. Struve's 

 measure in 1820 (46'* ss* np) is entitled to greater confi- 

 dence. The former rest on the observations of one night ; 

 and long experience has now shown, that this can never be 

 fully depended on. (H.) 



No. XXI. R. A. 16^ 8°^ ; Decl. 34** 20' N. 



.• r. ii;:, <r Coronse ; I. 3 ; H. and S. 222. 

 Double ; 6th and 8th magnitudes. 



Passy ; April 3, 1825 ; Seven-feet Equatorial. 



Position = 12° 18' ra/ 1 5 Obs. | Diff. = 6° lo'. Extremely difficult. 



The small star only seen by glimpses. In the accuracy of the results I have no 

 confidence. Observations of distance impracticable. 



• On referring to our original manuscripts, this suggestion offered by Mr. 

 Herschel is corroborated ; for on the 19th June, 1822, the star was measured by 

 one of us, in the absence of the other, and under very favourable circumstances, 

 the mean of eight measures (the extremes of which differed only 1° 22') gave. 

 Position" 45° 33' np. As however the observations subsequently made, were so 

 much at variance with them, it was thought advisable to give the preference to our 

 joint result, and to suppress the other. Sloane-street, March 11, 1826. 



