410 Proceedings of the Royal Irish Academy. 



The Cordoba estimates yaiyfi'oiiL 4-8 to 5-4, and Dr. Gould says, "The 

 variahility seems to me highly probable." Espin says, " The variation 

 is rmdoTibted, but the period may be long enough to enroll it in Class 

 III." (Periods of several years), {Miglish Mechanic, ITay 18, 1883). 



]S"o. 730. 80 Pegasi.— 5i and 61 Lalande (46719-20) ; 7 m. Hard- 

 ing; 6-7 Heis. J^ot in Argelander's TJranornetria. Suspected variable 

 by Gould, who rates it 5-8. Sir W. Herschel gives 77-80. 



]S^-731. 82 Pegasi.— 6 m. LaLande (46772); 6 m. Bessel; 6-0D]M[; 

 6-5 Argelander; 6 Heis; 5-7 Gould (at Albany), and o'S at Cordoba. 

 Gould suspects variation, although he includes it in his list of standards 

 of magnitudes {U.A., p. 36). Sir- "W. Herschel gives 70, 82, 77. 



1^0. 732. BrE:u:iXGB:Air 651 Cephei. — In the notes to Birmingham' s 

 Catalogue is the following remark, " JS'o, 651 (Schj. 276), colour 

 yellow, not red; very feeble zones; must be variable - !Mem. II. orange, 

 variable; third type ; feeble zones — Prodromo, &c., 1876." Birming- 

 ham found it 7 m. and " yellow, slight red tinge," April 18, 1873. 



m. 733. P. XXIII., 216, 217 Pegasi = :S 3044.— A double star 

 8'5, 8"5 : 102° : 18'''5. Struve found the difference vary a whole mag., 

 and "\7ebb found the components obviously unequal, p the smaller." 

 {Cel Oljects, p. 369). 



1^0. 734. Laoatlle 9643 CEifTAmi. — 6^ m. Lacaille ; 6-0 Tarnall 

 (1862) ; 6-7 Ellery (1867) ; 7-6 Cape Catalogue (1878-77). The Cor- 

 doba estimates vary fi'om 5' 5 to 6 •2. 



jS'o. 735. Lalaxde 47032-34 A>"I)E03£ed^. — Bated 7-8 m. by 

 Lalande, Sept. 22, 1797, and 5-6 m. Xov. 11, 1798; 7 Harding. 

 Labaume says [R.A.S. Memoirs, vol. iv.), that but for the difference 

 of magnitude they might be considered identical. But as the positions 

 given by Lalande agree closely, the star may possibly be variable. It 

 was rated 6 m. by Heis (Xo. 41 of Andi'omeda), but is not in Arge- 

 lander's Uranometria. It is a double star 2 3050 (6, 6 : 202° : 3") and 

 a suspected binary. 



Aug. 23, 1883, I found Heis' star (?) (the/oi 3 stavs iR Warding' s 

 Atlas, Map xviii.) 4 steps brighter than Heis' Xo. 40 of Andi'omedae 

 (south of it) ; but query, Is Heis' star identical with the one referred 

 to by Labaume ? The star observed by me does not appear to be iden- 

 tical with Lalande's star, but is closelj following it. 



Xo. 736. 3 Ceti.— 5* Lalande (47200) ; 6 m. Heis ; 5.22 H.P. 



Dr. Gould remarks, ' ' The Cordoba estimates of magnitude of this 

 star range thi'ough the whole interval from 4-9 to 5 "9, leaving, in my 

 mind, small doubt of the variability of its light." Pranks estimated it 

 5^m. Oct. 29, 1877, and brighter than any of the following stars: — 

 B"A.C. 8221, 8239, 8266, and 8285. 



