26 Mr. South's observations of the apparent distances 



No. CCCCXI. continued. 



Measures of A C. 



Blackman-street ; January 31, 1824; Seven-feet Equatorial. 

 5th and 10th magnitudes. 



Position = 1 6° 2'*/ c Obs. I DifF.= i° 8' i„ • i j-o: i* 

 Distance=8".96i "^ 5 Obs. | Diff.= i"M3 } Excessively difficult. 



Five-feet Equatorial. 

 Distance=8".262 | 5 Obs. | Diff.=o".962. Excessively difficult. 



Position = 1 8" 3 5' «/ 

 Position =18° 3 3' 5/ 

 Distance=7".867 



6 Obs. 

 6 Obs. 

 5 Obs. 



Passy ; January 8, 1825 ; Seven-feet Equatorial. 

 5 th and 10th magnitudes. 



DifF.z=3° 30 Excessively difficult,5/f 

 DifF!=i".505 5 Extremely difficult. 



The first set of observations of position taken this evening were obtained with 

 179 ; it being however insufficient to separate distinctly the two stars A and B, the 

 subsequent measures were procured with 273 ; the star C bears a very tolerable 

 illumination ; but the night having become unfavourable* no measures of AB can 

 be gotten. 



Passy ; October 16, 1825 ; Seven-feet Equatorial. 



6th and 10th magnitudes. 



Position = i7°i9'«/I 5 Obs. I DifF.= 2°5' }^ ■ ^ a-m u 

 Distance=7''-393 I 5 Obs. | DifF.=o"962 } Excessively difficult. 



Observed with 181. The close star B is distinctly seen, but no measures of it can 

 be obtained, in consequence of extreme unsteadiness of the stars. 



Mean Result. 

 Position 16** 52' sf; (27 Obs.) Distance 7".909 (25 Obs.) 



Epoch 1824.71. 

 The position of the distant star C was stated in 1782 at 

 10** 37' sf, and in 1804 at i8' 57' sf. It is to be presumed 

 that some mistake had been committed in the earlier mea- 

 sure. (H.) 



