GrORE — On Suspected Variable Stars. 323 



five other brighter stars shoTV no eYicIence of variabiiity, but some of 

 the sraaller stars have certainly changed their relative brightness since 

 the former obsei'vations [Mon. Not. R.A.S., Feb. 1876). 



1^0. 93. Meeope Pleiaduii. — See last note. A faint nebula sur- 

 rounding this star, discovered by Tempel, 1859, has been suspected of 

 variation, but the evidence is very conflicting. It has been seen by 

 several observers with apertures ranging from 2 inches to 37 inches 

 (Common), but others doubt its existence, notably Burnham, who has 

 failed to see it with the great American refractors. Trouvelot, how- 

 ever, from his own obseiwations, 1875-1880, concludes that the nebula 

 is really variable. {Science Observer, Dec. 15, 1881.) 



'No. 94. 30 (e) Tattei. — 5^ and 6 m. Lalande ; 5 m. Argelauder, 

 Heis, and Houzeau (1875*15) ; 5-2 Gould (at Albany), and 5-3 at Cor- 

 doba; 6 m. Franks, jSTov. 30, 1877, " greenish white." On Sept. 27, 

 1883,1 estimated it 5-5 m. (about two steps less than 47 Taiui) ; 

 April 1, 1884, 5-2 m. 



1^0. 95, Atlas Pleiautim:. — See note to itaia Pleiadum. Atlas was 

 seen double by Struve in 1830, dist. 0"-79 ; but Dawes, Secchi, Dem- 

 bowski, and Burnham have always found it single. 



No. 96. p PoEXACis. — 6 m. Lacaille ; 5 m. Argelander and Heis ; 

 5-4 Behrmann. The Cordoba estimates vary from 5-3 to 6-0; 6-5 Ca^e 

 Cat. {187S-71). 



K"o. 97. /EELDA-y-i.— A double star, 5, 5^: 199°-7: 8"-5. Gould 

 considers that the / star of this pair is probably variable ; estimates 

 from 4|- to 6. 



jSTo. 98. Laxaintde 7172 Tatjei. — 8^- m. Lalande; 9m. Harding; 

 7*8 m. in D ^. The Cordoba estimates vary from 6-8 to 7 '9, and the 

 star is evidently variable. Sept. 30, 1883, I found this star consider- 

 ably less than Lalande 7021 (6'8 Gould), and about 7-8 or 8 m. 



No. 99. Lacaille 1286 Eeida^-^i. — 6 m. Lacaille; 6-5 Behrmann; 

 6-2 Gould, who says, " There is some reason for suspecting variation in 

 the brightness of this star." 6 m. Cape Cataloffiie {1877 -Bi). 



K'o. 100. y Eeidaxi. — 3-4 Sufi; 2m. Lalande and Harding; 3 m. 

 Argelander and Heis ; Sir W. Herschel gives the sec_[uence 67 {f3) , y-, 8 

 3-94, Sir J. Herschel (%;e Obs. p. 343). He says (p. 179), "marked 

 as 2*3 m. in A.S.C., but it is certainly not above 3-4;" 2-8 Gould. 

 D' Arrest called it " orange ;" 3 m. Pranks, ISTov. 30, 1877. 3-05 as H.P. 

 Nov. 1875, I estimated it 3i-m. ; Dec. 1876, y seemed about 3 m. 

 and equal to (3 Eridani. 



Secchi found " Spectrum third type; magnificent zones, but cer- 

 tainly variable." {Addenda to Birmingham^ s Catalogue.) 



