Gore — On Suspected Variable 8tars. 357 



No. 341. t LEOisnrs. — 3^ Lalande ; 4m; Argelander and Heis; 4*0 

 Grould; 4in. Franks (nearly = /3 Virginis), March 29, 1878 (private 

 letter); 4-18 Pritchard (1882-360). A double star S-9, 7-1 : 68°-4 : 

 2"-54 (1877 Dembowski). JBoth the magnitude and colour of the 

 companion are suspected of variation. Sir W. Herschel found 77 (a-), 

 78 (t) - 91 (v). 3-98 H.P. 



April 17, 1876, I found t and cr Leonis nearly equal, cr (4-5 

 Heis), if anything slightly the brighter of the two ; March 4, 1884, i 

 one step less than cr, or about 4*2 m. 



!N'o. 342. - Tatjei. — A nebula discovered by Temple, March 14, 

 1879, in a region which had been most carefully searched for such 

 objects. It was at first supposed to be a faint comet, but its un- 

 changed place on March 16 showed its true character. According to 

 Temple it has two nuclei, distant 15" to 20", and is larger and 

 brighter than Herschel II. 32, which lies near it. It is not in Zas- 

 seWs Catalogue of 600 nebulse discovered at Malta. It precedes a 7 

 mag. star ("W. B, XI. 305), 1 m. 27 s. nearly on the parallel. Cha- 

 cornac in his Chart No. 34 shows a 12*13 m. star about 3' from the 

 place of the nebula, but shows no nebulosity {Nature^ May 8, 1879). 



No. 343. 57 ITes^ Majoeis.— A double star 6, 9 : 9°-9 : 5"-9. 

 Smyth remarks {Bedford Catalogue, p. 253), '' y says that the small 

 star is a " red point without sensible magnitude ;" and S, upwards of 

 half a century afterwards rates it of the 10th lustre, as shown by his 

 seven foot telescope. In the summer of 1835 it was very distinct, being 

 a bright 9th size, bearing illumination admirably. Is it variable ?" 

 Burnham gives 5*2, 8-2 : 7°-l : 5"-43 (1878-425). Heis rated 57 as 

 5 m. and Peirce measured it with a photometer 5-40 {Harva/rd Annals, 

 vol. ix.). It is 5-24 and 5-0 " est " in H.P. 



No. 344. Laxande 21860-61 Leoi^is. — 6 and 5\ Lalande ; 7 

 Bessel ; 7-5 in DM; 6-7 Heis, and 6-9 at Cordoba. Suspected 

 variable by Gould, although included in his "Standards of Magni- 

 tudes" {JJranometria Argentina, p. 28). He adds, however, that 

 " no change has been perceived in its brightness" at Cordoba {Urano- 

 metria Argentina, p. 336). April 2, 1884, I estimated it 6*7 m. — 

 one step brighter than LL 21640, but less than LL 22058. 



No. 345. X Heaconis. — 3-4 Sufi, Argelander, and Heis. Sir W. 

 Herschel gives X'k, or about equal; 4m. Harding; 3-94 Sir J. 

 Herschel; 3-3 in DM; 3'75 Pritchard (1882*712). My observations 

 are: — January 30, and Pebruary 17, 1876, A slightly less than k dra- 

 conis, and of an orange hue, not brighter than S Ursse Majoris; June 

 12, 1877, X slightly brighter than k, and of an orange hue ; April 9, 

 1883, X yellow, or light orange, and two steps less than k Draconis. 



