126 



REPORT ON 



By the method of least squares we obtain, from these 32 equations of condition, 

 the fivn normal equations 



S 3 + &c =165. 



s 6 + &c = 16 a 



- &s $o + & c =16 D. 



, S t + &c = 16 E. 



For convenience of computation these equations have been put under the form 



16 _j_ 8 + 2* \ 



~2 / 



'lO + '^20 



2 



