38 



M. Bessel on the Declination of the principal 



The declinations contained in the last column can, on ac- 

 count of their having been calculated with the Konigsberg 

 table of refraction, be immediately compared with my cata- 

 logue. The following table shows their differences from my 

 declinations, as well as the differences of Mr. Pond's standard 

 catalogue and his list for 1822 {Astron. Nachr. No. 28), by 

 which the changes which these differences have gradually un- 

 dergone may be seen at once : 



