and positions of 458 double and triple stars, &czy 47. 



No. CCCCXLI. R. A. 3*^ 43°* ; Decl. 31° 20' N. 

 5" Persei ;. Struve, 108 ; VI. 96. 



Quadruple; A 4th, B 12th, C 15th, and D of the 13th mag- 

 nitudes: all south p^,^ceding. B is decidedly blue ; bears 

 a much better illumination than C or D ; an|i D b,eaj:i?, more 



than C. 



Measures of A B. 



Passy ; December 22, 1824 ; Seven-feet Equatorial. 



Position = 65* 47' 5p I 5 Obs. ^'"^ — -° --' ^ ^•^ 



Distance = 12". 825 j 5 Obs. 



S^f = 3>°'l Difficult. 

 DifF. = o".577> 



This star B seems to have escaped the observations of Sir William Herschel, 

 a circumstance which is rather singular, seeing that it is brighter than either of the 

 more distant stars, whose situations relatively to ( have been determined by him.— 

 Is the star B variable in point of lustre ? The stars between the clouds are magni- 

 ficently bright, and are unusually steady, although the wind, which during the last 

 thirty-six hours has been tremendously high, threatens every moment to carry away 

 the roof of the observatory. The shutters are only separated from each other by a 

 space equal to the diameter of the object end of the telescope. 



Passy ; December 23, 1824 ; Seven-feet Equatorial. 



4th and 12th magnitudes. 



Position 640 S3' ^i' I 5 Obs. I DifF. = 1° 27' ] Verv difficult 

 Distance I3".767 1 5 Obs. | DifF. = o".72i S ^^ tumcult. 



Night very fine, but of A C no measures can be procured; and these of A B just 

 obtained were attended with much greater difficulty than were those of last night ; 

 should therefore the two sets differ, those of last night must have the preference. 



Passy ; January 19, 1825 ; Seven-feet Equatorial. 



4th and 12th magnitudes. 



Position = 64° 33' «;> I 6 Obs. | DifF. = z^ 45'. Very difficult. 



To night I should certainly say that the nearest star B was not so distinct with- 

 out illumination as either of the more distant stars, nor does it bear illumination so 

 wqII as the distant star D ; but still allows much more of it than C. Are any of the 

 group variable ? The angle of position of A B was this evening gotten with consi- 

 derable difficulty. The night is very fine. 



