408 Proceedings of the Roijal Irish Academj/. 



p. 546). He gives observations from 6 to 10 m., with a probable 

 period of 115 days, " but very doubtful, owing to want of sufficient 

 observations." I am not aware that the variation has since been 

 confirmed. It is not in Schonfeld's Catalogue, 1875, but it has been 

 lately suspected of variation by Franks, who rated it 7 m. in JS^ovem- 

 ber, 1877, and " 1'"<B.A.C. 8104." On February 22, 1884, I esti- 

 mated it 71 m. — more than a magnitude less than B.A.C. 8104, which 

 seems about 6 m. ; March 3, rather fainter about 7f ; March 13, small 

 about 8 m. ; March 14, 7| or 8 m. ; March 17, 7f ; March 18, 8 m. ; 

 March 22, 8 m. 



1^0. 713. Birmingham 637 Pegasi. — I^ot in Lalande's Catalogue. 

 7 m. Harding; 8-5 Lament; 7 Bessel. Birmingham's observations 

 (1873-1875) vary from 5 to 7-5; Webb, 8 m. December 12, 1873; 

 Burton, not seen, September 26, 1876. My observations are : — 



]S"ovember 1, 1878, 7-J m. 



December 23, 1878, a little brighter — about 7 m. 



January 13, 1879, about half a magnitude brighter than a star 

 following r Pegasi. 



August 14, 1879, about the same brightness as last observation. 



September 13, 1879, about = a star^ t (3-inch refractor). 



December 7, 1879, two steps brighter than the star^ t. 



September 10, 1883, two steps brighter than the star^ t. 



1^0. 714-Cephei. — Yariation suspected by Argelander, but not 

 since confirmed. 



jSTo. 715. Lacailie 9455 Geuis. — 5 Lacaille. The Cordoba esti- 

 mates for the combined light of this star and Brisbane 7280 vary from 

 5'7 to 6'1 [Tlranometria Argentina, p. 275). 



No. 716. Lalande 45980 Aquarii. — 7 m. Lalande, Piazzi, and 

 Bessel ; 6-5 Heis ; 7*1 Johnson, 1858. Estimated 6-3 at Cordoba, 1872 

 and 1874, and 1\ on the meridian, November, 1877. Dr. Gould says, 

 "Its variability seems probable." 



No. 717. 100 Aquarii. — 5 m. Lalande and Harding; 6-7 Heis. 

 Not in Argelander's Uranometria, nor in Behrmann's^^/as ; 6*3 Gould. 

 Sir W. Herschel found 101-100. September 21, 1875, I found 100 

 much fainter than 99 and 101 Aquarii, and about magnitude 6|-. 



No. 718. Lalande 46090 Aquarii. — 6^- Lalande; 6 Argelander and 

 Heis, but found by Schmidt to be invisible without the telescope on 

 July 9 and 10, 1878. It was rated 7 m. by Bessel and only 8-9 by 

 Lamont. The Cordoba estimates are 6"7, 6-8, and 7*1. 



September 21, 1879, 1 found it equal to a star closely s. of it-LL. 

 46085. 



No. 719. I PncENicis. — 5 m. Lacaille ; 5-4 Behrmann. Gould says, 

 "In 1871 the magnitude of t Phoenicis was estimated as 5"1, but in 

 1873 it was 4*4, by the accordant estimates of two observers in each 



vcar." 



