312 Trans. Acad. Sci. of St. Louis. 



NOTES. 



I 2022. The observations indicate no appreciable change 

 ill 40 years. Struve's observation of 1830 appears erro- 

 neous. 



2" 2120. It has been hitherto difficult to pronounce defi- 

 nitely as to the motion of these stars but the following 

 observations seem to indicate that the change in position — 

 angle and distance is due to a rectilinear movement of the 

 smaller star : — 



- 2156. Probably a binary of long period. Change in 

 angle in 77 years only 6°. 



S 2173. A binary system in quick motion, the plane of the 

 moving body passing nearly through the sun. 



