90 



EIGHTH REPORT — 1838. 



The portion of country over which these observations extend 

 is too limited to afford an advantageous combination for the 

 deduction of the vahies of u and r; I have therefore combined 

 them with my own twenty-seven results in Table XXIV., 

 forming an united series of thirty-six stations towards the final 

 deduction of the values of u and r in Scotland, Mr. Fox's ob- 

 servations having been previously reduced to September 1836. 

 From this combination we obtain the following values; x=s 

 -t--320; r/=--447; «=-54°20'j )- = 0-550 ; 5=72° 13'2 at 

 the mean geographical position 56° 18' N., and 4° 10' W. 



If we collect in one view the values of u and r which have 

 been thus obtained from the observations in Scotland, we have 

 as follows : 



Table XXVI. 



Regarding the values of u and r as entitled to weight propor- 

 tioned to the number of stations of which each is the represent- 

 ative, we obtain u= —56° 06', and r = 0-549, as the mean va- 

 lues derived from the observations in Scotland, and corre- 

 sponding to the central geographical position of 56° 49' N., and 

 3° 39' W. 



