Gore — On Susjjecfed Variable Stars. 393 



Iso. 609. 77 CrGNT. — 4-3 Ptolemy; 5 m. Sufi; 6 m. Flamsteed ; 5 

 and 4 Lalande (38092-3) ; 6 Flamsteed ; 6-7 m. Piazzi ; 3 m. Bessel 

 (Sept. 8, 1828); 4-5 Argelander and Heis ; 4-5 Houzeau ; 4^ 

 Pranks, Aug. 31, 1877 ("very bright for its magnitude"); 4-10 

 Pritchard (1882*430). These estimates of magnitudes would seem to 

 imply variation of light. Sir J. Herschel drew attention to its pro- 

 bable variability in 1842 (see Nature, Aug. 12, 1880). Sir W. Her- 

 schel gives 21 (17) -41 and 21 — 17. 



Nov. 9, 1876. I found 77 = 41 Cygni. 



Aug. 1, 1877. 17 very slightly less than 41 Cygni. 



April 19, 1878. Brighter than 17 and 28. 



No. 610. 62 (c) Sagittakii.— 5|- Lacaille (8315); 5 Harding; 5 

 Heis. The Cordoba estimates vary from 4*6 to o"3, but are doubtful 

 according to Gould on account of the possible variability of the com- 

 parison stars CO and h Sagittarii {U. A. p. 291). 



No. 611. Lalande 38405-7 and 38409 Aqthl^.— Rated 6 m. by 

 Lalande, July 15, 1794; 7 m., Aug. 15, 1794; 8 m., Aug. 20, 1794; 

 and 7|- m., Aug. 30, 1795 ; 6 m. Harding; 8 m. Bessel ; 7 m. Berlin 

 Academy Charts ; 6-7 Heis and Houzeau. It is not in Argelander's 

 TJranometria. It was estimated 7*1 at Cordoba {JJ. Argentina, p. 324 

 (LL 38409) ). About 20' n of and a little^ is Lalande 38388-90. 



Aug. 31, 1877. I found it less than LL 38388 ; also less than 

 LL 38214-15, but brighter than an 8 m. star np (LL 38342-4). 



No. 612. 27 {V) Cygni.— 61 Lalande (38541); 6 Harding ; 6-5 

 Heis; 6 m. Pranks, Sept. 21, 1877. Sir W. Herschel gives 36-27. 



No. 613. Lalande 38506 Aqtjil^. — 6 and 6i- Lalande; 7 Bessel; 

 6 m. Argelander and Heis, but estimated only 6*6 at Cordoba. Gould 

 suspects variation, although the star is included in his list of " Stan- 

 dards of Magnitude " ( TJ. A. p. 33). 



No. 614. 66 AQUiLiE. — 6 m. Lalande; 5 Harding; 6-7 Heis; 

 Sir "W. Herschel gives the sequences 42*66, 64, and 66*62. 6 m. 

 Pranks (rather > 64), Sept. 12, 1877; 5*8 Gould, who calls it 

 red. In October, 1874, I found this star about 5^ m., and slighly 

 brighter than 62, which is rated 6 m. by Heis (6*1 Gould). 



Oct., 1876. About the same relative brightness. 

 Aug. 1, 1877. 66 = 62, but distinctly brighter than 64 (6-7 

 Gould). 



No. 615. Lacaille 8381 Sagittarii (= LL 38711). — 6 m. Lacaille 

 and Lalande ; 6 Heis ; 6-5 Behrmann ; variously rated from 4^ to 6 

 by Argelander ; 6 m. Cape Catalogue (1878-61). The Cordoba esti- 

 mates vary from 6 to 6*3. 



