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



No. VI. R. A. 7*^ 23™ ; Decl. 32° ifN. 



Castor ; II. 1 ; H. and S. 81. 



Double ; 3rd and 4th magnitudes. 



Passy ; February 18, 1825 ; Seven-feet Equatorial. 



Position = 7° 8' *p I lo Obs. | Diff. z= i° 54'. Tolerably steady. 



Observed within half an hour of either side of the meridian ; no other double 

 star visible. During the measures, the larger star passed through all gradations 

 of magnitude, between the third and ninth ; a circumstance which it is necessary to 

 mention, as in taking the mean they ought not to be allowed a value, proportional 

 to their number. 



Passy; March 31, 1825; Seven-feet Equatorial. 



3rd and 4th magnitudes. 



Position = 6° 51' «/) I 7 Obs. | DifF. =: 0° 59'. Tolerably steady. 



Observed when 12 minutes west of the meridian. 



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

 Srd and 4th magnitudes. 



Position = 5° 59' sp 7 Obs. | Diff. = 1° 3-6' 

 Distances ^'.^^g 



SObs.|Diff.=o".529}^y^^y^'S^*- 



Stars beautifully defined, and as steady as possible j the sun shining ; not a cloud 

 visible : observations made with 787. 



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



3rd and 4th magnitudes. 



Position =fz'sp 7 Obs. I Diff. = 1° 1 1' ) Unsteady 

 Distance = 4".796 5 Obs. | Diff. = o".288i ^"steady. 



Observed with 181, when 20 minutes west of the meridian. 



Passy ; April 5, 1825 ; Seven-feet Equatorial. 

 3rd and 4th magnitudes. 



Diff. r= 

 Diff. 



:=i".48i}2y^i"s^*- 



Position = 6° 48' «;? I 7 Obs. 

 Distance = 4". 958 | 5 Obs. 



Observed on the meridian with 787 j stars exquisitely defined, and as steady as 



possible. 



Passy; April 6, 1825 ; Seven-feet Equatorial. 



3rd and 4th magnitudes. 



Position = 6° 22' sp I 7 Obs. I Diff. = 1° 18' ) g daylieht. 

 Distance = 4".826 | 5 Obs. | Diff. = o".48 1 ] ^^ ^^X^S'^^- 



The sun shining ; stars very steady, and extremely well defined. 

 Observations made with 513, when 10 minutes east of the meridian. 



