o/'Bessel's Astronomical Observations. 



419 



Konigsberg Refractions. 



Barometrical 

 Correction. 



Pari 

 line 



325 



326 



327 



328 



329 



330 



331:- 



332 - 



s. 



333 

 334 

 335 

 336 

 337 

 338 

 339 

 340 

 341 

 342 

 343 

 344 

 345 



— 1023 



— 889 



— 756 



— 624 



— 491 



— 360 



— 228 

 9 

 33 



164 

 293 

 423 

 552 

 681 

 809 

 937 

 + 1064 

 + 1192 

 + 1318 

 + 1445 

 + 1571 



The logarithm of the 

 refraction expressed in 

 seconds, with five de- 

 cimal figures, is = 

 log. tangs + * + A. (i — 



7A.T+A 



where r signifies the 

 centesimal degree of 

 the thermometer at- 

 tached to the barome- 

 ter. 



The readings of the 

 Konigsberg barometer 

 are to be increased by 

 + 0-503. 



The refractions given 

 with the observations 

 to the end of the year 

 1821, require to be mul- 

 tiplied by the following 

 factor. 



9 G 2 



Thertno- 



