COMET OF 1889-1896-1903 • 249 



These equations were multiplied by the square root of their 

 respective weights and for convenience the following auxiliary 

 unknowns were substituted. 



X = [1. 10] ^~ 



y — Ai2 



2 ^ [0.80] A? 

 t t= [l.io] A* 

 u = [i.6o] ^M^ 



V = rs-oo] ^1^ 



n'= [1.80] n 



in which the quantities in brackets are logarithms. This 

 substitution resulted in the following, in which all the coeffi- 

 cients are logarithms. 



