188 OBSERVATIONS OF THE TERRESTRIAL 



from which we obtain, by elimination, 



B 



J ac ,( c ,- c ) a(c-c) 



If the weights of the three results be regarded as equal, that 

 is, if A = B = (7, the preceding values become 



To apply these results to the present case, we have 

 = -9380, b = -9460, e = 1-0038; 



c=- =1-0085, c-c='Q047. 

 a 



And introducing these values into the preceding expressions, we 

 find 



so that the corrected values of x and y are 



x = -9395, y = -9445. 



