168 



SCIENTIFIC RECORD FOR 1884. 



in scientific periodicals, they need not be further alluded to here. We 

 may, however, point out that the series of measures of 61 (B) Cygni 

 alluded to on page 159 as having been made at Moscow between 1863, 

 May 16, and 1866, October 13, and published in Annales de V Ohservatoire 

 de Moscoiv, vol. vii, 1 livraison, page 79 et seq., have been reduced by 

 M. Socoloif {loc. cit., vol. viii, 2 livraison), who finds — 



From measures of distance, 



parallax of 61 Cygni = + 0".4598±0".0550. 



From measures of position, 



parallax of 61 Cygni = + 0".4222±0".0342. 



From combination of measures, 



parallax of 61 Cygni = + 0".4330±0".0291. 



The observations were made by Schweizer, Struve's comparison star 

 (9.4 mag.) being used. — A. M. W. B., " The Observatory,^^ November, 

 1884, p. 335. 



From a report of a lecture by Dr. Gill on stellar parallax the following 

 is extracted : 



Parallaxes of stars which have been determined in the northern heavens with considerable 



accuracy. 



IKame of star. 



eiCvpnii 



Lalanile 21185 



a Tauri 



34 Groombridge . ., 



Lal.iudo 21258 



AOo 17415 



o- Draconis 



a Lyr.-e , 



p Ophincbi , 



a. Bootis 



Groombridge 1830 



Bradley 3077 



85 Pegasi 



Parallax. 



0.50 



0.50 



0.52 



0.29 



0.26 



0.25 



0.26 



0.20 



0.17 



0.13 f 



0.09 



0.07 



0.05 



G-, = Gill; E. = Elkin. 



