r 



396 Proceedings of the Royal Irish Academy. 



ISTo. 631. P. XX. 257 Deacoxis.— This seems to be No. 212 of Draco 

 in JS^e is' Catalogue, -where it is rated 6 m., and identified with 7124 

 B.A.C. JS^ot in Argelander's JJranometria. &ra.. va. IIardi7ig''s Atlas ; 

 rated 6J m. by Franks, 1877, and=P. xx. 265, and suspected of 

 variation. March 4, 1884, I estimated it 6 '2 — four steps less than \lr 

 Draconis, and much less than 73. 6-50 and 6-2 H.P. 



No. 632. 11 Pato>"is. — 4 m. and 5 m. Lacaille ; 5 m. Ca2)e Catalogue 

 (1874-64). The Cordoba estimates of magnitude during 8 years vary 

 fi'om 5-2 to 6"1, and Gould considers its yariability highly probable 

 ( U. Argentina, p. 246). 



No. 633. t Delphini.— 6 Sufi; 5 Lalande (39814-15); Sir- W. 

 Herschel gives 7 (k) , 5 (t) . 3 (77). 5'3 in Durchnustenmg ; 6 m. Arge- 

 lander ; 6-5 Heis ; 5-8 and 5'9 Gould; 5^ Pranks, September 2, 1877 

 ;^K = 5 m. and 77= 6 m.). My observations are : — 



August, 1875, about 1 magnitude fainter than k (5 m. Heis). 



August, 1876, a little less than k. 



August, 1877, slightly less than 77. 



October 7, 1879, slightly brighter than -rj, and slightly less than k, 

 or about 5*3 m. 



No. 634. 71 AauiLiE. — 4^m. Lalande (39803) ; 5|-Bessel; 4"7 in 

 D.M. ; 5-4 Heis ; 4-2 Gould (at Albany). The Cordoba estimates are 

 4"4 to 4'6, and Gould says, " There is some grounds for suspecting it 

 to vary a little" [U. A., p. 324). Sir W. Herschel gives 71-70 and 

 41 (i) 7 71. In August, 1875, I estimated it 4^m., and blighter than 

 70 Aquila;. 4-63 Pritchai'd (1882-589). 



No. 635. Red Stae near a Cxgni. — Found by Birmingham, May 22, 

 1881, 2*-^51'-7 north of a Cygni, of a deep red or crimson colour, 9 mag., 

 and suspected by him to be variable. He observed it on June 2 and 6 

 to have increased from 9 m. to 8-4, but on July 20, it had again sunk 

 to 9 m. It " forms with three other stars, the southern end of a little 

 inverted and irregular cross" {Nature, July 28, 1881). The star was 

 observed a few days after its discovery, by Dr. Doberck, at Marki-ee 

 Observatory, '^'arcl, Gledhill, Dr. Ball, Prof Krueger, and Dr. Kreutz. 

 The latter stated that he had found an unpublished observation of the 

 star on June 19, 1857, but not at any other time {Nature, June 23, 

 1881). Its spectrum was found by Eugen de Gothard, in 1882, "tole- 

 ]ably brilliant, with broad bands in the red, yellow, and blue. Colour 

 intense red" {2lon. Not. R. A. S., June, 1883). According to "Ward 

 {Knowledge, .January 4, 1884), it probably varies from 8 J to below 

 12 m., with a period of over 12 mouths. 



No. 636. BTmrrN-GHAM 569 Delphixi (= AB.GEL.OfDEE 17°, 4401). — 

 6-d Argelauder ; 8 m. d' Arrest, September 10, 1874. It is not in 

 Lalande^ Catalogue ; 8 m. Harding ; 6-7 Heis. 



