404 Proceedings of the Royal Irish Academy. 



-/ or -q Is variable to some extent. The Cordoba estimates make y 

 0-2 m. brighter than 77. Franks found y = ■>;(= 4 m.), and both less 

 than ^Aquarii, Oct. 14, 1877. 4-07 H.P. 



Sept. 10, 1883. I estimated y as 4-0 from comparisons with t, 

 and 77. 



JS'o. 685. Blrmingham 610 Cephei. — 7m. Harding; 7-2 Arge- 

 lander; 6-5 Schjellerup (Xo. 262); 6-5 Bii'mingham, March 19, 1873. 

 In the notes to his Catalogue, Birmingham says, "on January 17, 

 1868, Secchi found this star very small, and suggested variability. On 

 December 9, he searched twice, and found that the largest star on the 

 field of view was no more than 8 mag." On February 17, 1884, I 

 found it about 7|- m. with binocular. 



No. 686. Aifoif Aquaeh. — Observed by Riimker as 7*8 m., but not 

 byLalande or Bessel. Close to the place, Lalande and Bessel observed 

 a 9 m. star, which seems to be Lalande 43873-4 (8^ and 9). 



IS'o. 687. C Piscis AusTEAXis. — 5 m. Ptolemy ; 5-6 Sufi ; 6|- Lalande 

 (43924); 6 m. Lacaille (9160) ; 6 Harding ; 5-6 Ai'gelander and Heis ; 

 6-5 Behrmann ; 7 m. Cape Catalogue (1878-72). It is included by 

 Schonfeld in his provincial list of variables. He says (? quoting 

 Schmidt), "August, 1864, und 1869, unter den giinstigstenllmstanden 

 nur mit Miihe zu sehen, und selbst in dem hochgelegenen Kephissia 

 nur 7 m. im Opernglas." A.jST. 74'1770." From a discussion of the 

 various magnitudes assigned by different observers, C. H. F. Peters 

 comes to the conclusion (A.N. 2360) that this star is probably variable 

 with a long period. 6'62 H.P. 



I estimated it about 7 m. August, 1877 (Punjab), and November, 

 1882 (Ireland). Dr. Gould found it 6-6 or 6-7 from observations at 

 Cordoba ( Z7r«??0OTefoV« Argentina, p. 296). 



No. 688. 67 Aquabji. — 4 m. Ptolemy and Sufi ; 6J, 7 Lalande 

 (44433-4); 6 Harding ; 6 m. Argelander and Heis; 6-4 Grould ; 6 m. 

 Franks, October 15, 1877. Sir W. Herschel gives 67-78. 6-20 H.P. 



September 5, 1877, I found 67 less than k Aquarii, and equal to 

 a 7 m. (Harding) about 1° 20' south of it. 



No. 689. 66 (^) Aqtjakii.— 6, 5, and b\ Lalande (44436-8) ; 6 m. 

 Harding ; 5-6 Argelander and Heis ; 5 Franks, 1877, and 1 mag. > 68. 

 Sir W. Hersehel gives 66 ~ 59 (u). The Cordoba estimates vary from 

 4-8 to 5-6, and Dr. Gould thinks it " probably variable " {U.A., 

 p. 310). 4-81 H.P. 



No. 690. -q Pegasi. — 3 m. Ptolemy, Sufi, Lalande, Harding, Arge- 

 lander and Heis; 3-31 Sir J. Hersehel. In the MontUy Notices of the 

 R.A.8., January, 1874, Mr. Christie (now the Astronomer Boyal) 

 says, " there can be no doubt that rj Pegasi is a new variable star of 

 moderate period." Sir "W. Hersehel gives 55 (C) , 62 (77) . 48 (y). 

 2-95 Pritchard ( 1882-658). Schmidt thought its colour variable — more 

 or less red in different years. 3-06 and 3-2 H.P. 



