GrORE — On Suqmifed Variable Siaj:s. 397 



Xo. 637. 118 Heis Cyg.xi (= 7198 E.A.C. = Lala^'de 40156).— 

 7 m. Lalande and Harding ; 6 m. Heis ; 6|- Franks, 1877. Peii'ce says 

 {harvard College A7inals, vol. ix., p. 141), "118 Heis, and 123 Heis 

 Cygni. The Zfranometria only contains tlie former star as .5-8 ; Heis 

 calls the former 5 '8, and the latter 6-3 ; the D.]\I. calls the former 6'4, 

 and the latter 0"4 ; and I call the former 7"0, and the latter 5-7. I 

 only succeeded in observing Argelander's star once, and never failed to 

 observe the other, Tvhich seemed to me brighter than 51 Cycni." 



October 5, 1879, I found 118 Heis Cygni about 7 m. — less than 

 Lalande 40221. 



November 12, 1882, relative mag-nitude same as last observation. 



May 21, 1883, 118 Heis faint, about 7 m. or 7-1 ; 123 Heis, two 

 steps less than 51 Cygni (strong moonlight). 



August 17, 1883, 118 Heis considerably less than the northern of 

 two stars to the south of it ; 123 Heis, three steps less than 51 Cygni. 



ISo. 638. 13 Delphixi.— 6 and 6i- Lalande (40150-1); 6-5 Heis; 

 5'8 Gould; 5J Franks, September 21, 1877 {private letter). It is in- 

 cluded by Schonield in his provisional list. He says (quoting Schmidt), 

 '■,Im maximum 6 m., kurze Periode,' A. ]^. 74, 1770." Sir W. 

 Herschel gives 13-14.' 5-53 H.P. 



ISo. 639. -7219 B.A.C. Cxgki.— w./. a Cygni ; 6 m. B.A.C. IS'ot 

 in Heis ; 7 m. Franks, 1877. It seems to be Lalande 40251-2 (6 m. 

 and 7m.); 7 m. Harding. May 21, 1883, I estimated it 7 m., less 

 than Lalande 40221 ; August 17, 1883, rather below 7 m. 



Ko. 640. - 14 DELPHI^-I.— 61 m. Lalande (40227) ; 7 Bessel ; 

 6 Heis; 6'4 Gould; 5*5 D.M. Included by Schonfeld in his provi- 

 sional list. He says (quoting Schmidt) ", JJ. N. 6 m., 1869, August, 5, 

 bis 6 Stufen schwacher und mit freiem Auge nicht sicher zu sehen,' 

 A.N. 74, 1770." Gould suspects variation, although he includes it 

 in his list of "Standards of Magnitudes" {U.A., p. 34). Sir "W. 

 Herschel, 13-14. 



No. 641. 123 Heis Cxgni. — Not in Lalandeh Catalogue; 6 m. 

 Sarding's Atlas (Map. 26, but not in Map 25), 6-7 Heis; not in 

 Argelander's Vranometria. See note to 118 Heis Cygni (Xo. 637). 

 My observations are — 



October 5, 1879, 123 Heis Cygni nearly 1 magnitude less than 51 

 Cygni; brighter than Lalande 40221. 



November 12, 1882, at least half a magnitude less than 51 Cygni ; 

 brighter than LL 40221. 



May 21, 1883, about two steps less than 51 Cygni, and three steps 

 less than 59 Cygni ; brighter than LL 40221. 



August 17, 1884, three steps le^s than 51 Cygni, or about 6-1 m. 



