and positions 0/4,58 double and triple stars, &c, 203 



No. DCLXXX. R. A. 16^ 35" ; Decl. 13** 58' N. 



Nova ; 

 Double; 9th and 13th magnitudes. 



Passy ; June 9, 1825 ; Seven-feet Equatorial. 



Position = 65° 26' np I 5 Obs. | Diff. = i^ 14 { Excessively difficult. 

 Distance z= 13 .535 | 5 Obs. [ Difr. := o'.^zg ) ' 



The night is very favourable, but the small star will not bear the slightest illumi- 

 mination ; hence the results are liable to some inaccuracy. 



Passy; June 12,1825; Seven-feet Equatorial. 



9th and 1 2th magnitudes. 



Position =65°46'n/> 

 Distance = i4"-323 



^ - ■ I * ^ > Excessively difficult. 



5 Obs. I Diff. = i".274^ 

 Observed on the meridian. Night fine j but neither star bears much illumination. 



Mean Result, 

 Position 6s° 36' np ; Distance is" -9^9 ; Epoch 1825.45. 



No. D CLXXXI. R. A. 16^ 38°^ ; Decl. 28° 42' N. 



46 Herculis ; Struve, 532 ; I. 79. 



Double ; 7th and 1 2th magnitudes ; small star decidedly blue, 



and becomes much more distinct by slight illumination. 



Blackman-street ; April 28, 1824 ; Five-feet Equatorial. 



Position =73° 46' sf 

 Distances: 4". 396 



5 Obs. 

 5 Obs. 



Diff! = i".073 [ Extremely difficult. 



Observed when 3'* 10' east of the meridian ; the results must therefore not be 



deemed standard. 



Blackman-street ; June 29, 1824 ; Five-feet Equatorial. 



7 th and 1 0th magnitudes. 



Position = 71° 8' */ | 5 Obs. 

 Position = 70° 44' */ 1 5 Obs. 



The first series was observed when the stars were one hour east of the meridian, 



without artificial illumination; the last when they were 35 minutes distant firom 



it. During strong twilight the blue colour of the small star was very decided. 



Diff. = 3° o' 7 By twilight. 



Diff. = S° S^' i 2y lamp illumination. 



