Gore — On Suspected Variable 8tars. 387 



ISTo. 566. 12 AauiL^.— 4 m. Lalande (35482-4); 5 Harding; 5-4 

 Argelander; 4-5 Heis ; 3-8 Gould. M. Goujon suspected variability 

 in this star {Comptes Rendus, vol. xxvii., p. Ill), and says, " Fl. 

 (1690) called it 5 m.; Bradley (1750-1762) 5-6 m.; ... Lalande 1794 

 to 1796, 4 m.; Piuzzi 8 times 5-6." Gould says, " It may be a vari- 

 able of long period" [U. A., p. 95). 



August, 1875, I found 12 distinctly brighter than 9, and about 

 = 6 Aquilse. 



Franks rated it 4im., and "lucid yellow," July 27, 1877. Sir 

 W. Hersehel gives 1, 12 and 6-12, 9. Pritchard, 401 (1882-583). 



No. 567. A Lyr^.— 6 m. Lalande; 5-8 Argelander; 5-6 Heis; 

 4'5 Birmingham (November 1, 1876), who suspects variation. 



April 6, 1884. I found A 2 steps less than 17 Lyrse, but brighter 

 than LL 35045. 



No. 568. Birmingham 483 AauiL^.— 7|- Lalande (35611); 7-5 

 Bessel ; 7'5 Birmingham, September 16, 1876. Included by Schon- 

 feld in his provisional list. He says, '^ Schmidt fand diesen sehr 

 rothen Stern, October, 1872, langsam abnehmend. A.N. 80. 1912, 

 vergl. auch 80. 1905." 



No. 569. Y 8122 Sagittarh. — With reference to this star, Gould 

 says, " I have small doubt of the variability of this star, for which the 

 estimates of magnitude vary from 6'3 to 7"0. Yarnall noted it in 1865 

 as 6-0, June 11, and 7-0 August 15. It does not occur in Argelander's 

 zones." 



No. 570. 18 Aquil^.— 5 and 6 Lalande (35789-90); 5 Bessel; 

 5-2 in DM; 5 Argelander, Heis, and Gould; 5-6 at Cordoba. Gould 

 suspects variation, although he includes it in his " Standards of Magni- 

 tudes " {U.A., p. 32). Sir W-. Hersehel gives 18 711- September 23, 

 1879, I found 18 = 31 Aquila3 ; November 17, 1883, 18 about four 

 steps brighter than 10 Aquilae. 5-06 H.P. 



No. 571. -IT Sagittarii. — 4 m. Ptolemy ; 4-3 Sufi ; 4 Ulugh Beigh, 

 Tycho Brahe, Hevelius, and Lalande ; 4^ m. Piazzi, Taylor and 

 Maclear ; 5-6 and 4 d'Agelet ; 3 m. Argelander and Heis. The Cor- 

 doba estimates vary from 2"7 to 3"2, and Dr. Gould considers that the 

 star has either increased since the time of the ancient observations, or 

 is " subject to fluctuations of a very long period." 3-11 H.P. 



No. 572. Bir:\iingham 487 Yulpeculje = Lalande 35928 (6 and 7). — 

 7 m. Bessel. Birmingham's estimates of magnitude vary from 6 to 7'5. 



No. 573. P. XIX. 13 LYRiE.— A quadruple star, 8, 11, 9-5, 12 : 337°, 

 350° : 18"-5, 74"-8 (9-5, 12 : 294° : 5"). Yv^ebb says, "12 var (?) should 

 be watched ; Hunt nearly equal, 1868 ; Sadler 0-5 less than 8-5, 1874." 



