o50 



Series V. and VI. Z = -5, /' = -313. 



Serirs IX. and X. I — I =: 'o~5. 



The following Table contains the calculated results of 

 the foregoing observations. The values of the coefficients, 

 Q and q', are deduced from the formula 



Q , Q' 



tan u zz -^,-\ — . 



by the method of least squares. 



