(211 ) 



the Pülaris-ubseivatioDS of Gyldén and Ntkén and tlie second time 

 including the two hitter results instead of the former '). 



So I obtained : 



P' aohdion : A epoch + O'M 



A length of tlic period + .00 



2"<i solution: A epoch + 4'^7 



A length of the period — .45 



We see that it makes I'ather a considerable difference whether we 



Obs-E.13.IIa. Obs— E.BlIb. Obs— Cb.O-t Obs— Ch.'JS 



1) I also made a solution in which the length of the period was assumed as uni- 

 formly variable, but I do not mention it here, as the result seemed wholly illiisorv, 

 '-') .Veeordini^ to Chanuleb. 

 '■') According to H. Gr. v.vN de Sande 15akhuw,kn'. 



