364f Mr. South's re-examination of the apparent distances 



No. XXV. R. A. 1 7^ 8- ; Decl. ss*' s' N. 



^ Herculis ; V. i ; H. and S. 246. 



Double ; 4th and 10th magnitudes ; small, blue. 



Passy ; June 21, 1825 ; Seven-feet Equatorial. 



Position = 83° 26' sf\ j Obs. I DifF. = i° 25' 7 ^t . . j 

 Distance= z&'.si^ | 5 Obs. | DifF. = i".oioi ^°^ '^^^^y* 



Observed on the meridian ; night not very favourable. 



Passy ; June 30, 1825 ; Seven-feet Equatorial. 

 5th and 10th magnitudes. 



Position = 83° S^'sf\ 7 Obs. I DifF. = i<'3o' 7 ^t ,1 . j i 



Distance= zi".6s9 \ 5 Obs. | DifF. = o^Uj \ Unusually steady. - 



Observed on the meridian ; the small star is blue, and bears a very good illu- 

 mination. The night is extremely favourable : in the results I have the greatest 

 confidence. 



Passy ; July 1, 1825 ; Seven-feet Equatorial. 



5th and 1 0th magnitudes. 



DifF. =oOci' 7 ,» ^ , 

 DifF.=o".697r^''y^^^^^y- 



Position = 83° 42' sfi 7 Obs. 

 Distance s= z&'.Sg^ \ 5 Obs. 



Small star decidedly blue, and bears a very good illumination. Observations made 

 when on the meridian, and are extremely satisfactory. 



Passy; July 4, 1825 ; Seven-feet Equatorial. 



5th and Qth magnitudes. 



Position = 83° 12' 5/1 7 Obs. 

 Distances 26". 883 | 5 Obs. 



Diff = ^".43! } Tolerably steady. 

 Observed when 25 minutes west of the meridian. 



Mean Result. 



Position 83* S3' ^/(28 Obs.) ; Distance 9,6". 69^ (20 Obs.) ; 



Epoch 1825.50. 



The change stated to have taken place in this star is con- 

 firmed by the present observations ; according to which, 

 compared with those of 1821, a motion of -1- 1° 23' in angle, 

 and — 2". 1 75 in distance, has taken place since our former 

 measures. This is a remarkable verification of the relative 

 motion both in position and distance ; and as the change 

 is contrary to what the presumed proper motion of the 

 large star would alone produce, this star merits particular 

 attention. (H.) 



