GREAT REFRACTING TELESCOPE AT ELCHIES, IN MORAYSHIRE. 805 



Com- Magiii- 

 ponents. tude. 



A 

 B 



Colour. 



a HERCULIS — continued. 



Position. Distance. 



A 

 B 



A 

 B 



A 

 B 



A 

 B 



A 

 B 



A 

 B 



A 

 B 



A 

 B 



A 

 B 



A 

 B 



A 

 B 



A 

 B 



A 

 B 



A 

 B 



A 

 B 



3 

 6-1 



3-5 

 5-5 



3-5 

 5-5 



3-3 

 5-7 



3(1) 

 5(1) 



AB 116 6 



Egregiously yellow . . 



Intensely blue AB 11828 



AB 120 23 



472 



4-65 



4-85 



Date. Authority. 



1822-2 c. 



1829-63 2. 



1830-62 Dawes. 



AB118 34(w30} 4-994 (w 30) 1830-92 Bessel. 



AB 120 20(i«12) 4-980 (to 12) 1833-53 Selander. 



AB 119 6 



4-94 



1834-58 R. Sheep- 



[shanks. 



AB 119 16(11/ 9) 5-084 (m/ 9) 1835-77 Bessel. 



AB11840(m;40) 4-955(i(;40) 1842-53 ScMuter. 



Orange.... 



Emerald AB11842(u;9) 4:-5 (w 9) 1842-57 Cycle. 



AB123 32(wl2) 4-99(m/12) 1854-61 Luther. 



AB 118 23 (it/ 26) 4-52(wl5) 1856-08 Jacob. 



Orange (1) .. 

 Greenish (1). 



1856-68 Alta Vista. 



AB119 24(w 7) 4-8 (ic; 5) 1857-63 Spec. Hart. 



AB117 22(w34) 4-41 (m/ 17j 1858-04 Jacob. 

 AB 116 15(iy28) 1861-06 



AB 



5-196 



186 



1-06] 

 1'57] ^' 



Auwers. 



Coppery orange (4) . 



Greenish(4) AB 119 30 (tc/ 2) 4-71 (tf 0-8) 1862-72 Elchies. 



In Magnitude, both stars are known variables through one or two magni- 

 tudes. 



In Colour, they are brilliant, well understood, and constant; a small chromatic 

 equation being allowed for Struve's estimate or ideas of blue and green. I have, 



VOL. XXIII. PART II. 5 P 



