398 DR. C. CHREE: ANALYSIS OF RESULTS FROM THE FALMOUTH MAGNETO- 



In G! for D the differences hardly warrant a conclusion, but on the whole c 4 for D 

 being a partial exception the Falmouth values are above the Kew in winter and 

 below them in summer. 



Table XIV. gives the ratios borne by c a , c 3 and c 4 to Cj in the mean diurnal 

 inequality for the year, and also the excess of the ratios over the corresponding Kew 



TABLE XIV. Relations between Fourier Coefficients in mean Diurnal Inequality 



for the Year (1891 to 1902). 



ones. In D and W the 24-hour term is relatively more important at Kew than at 

 Falmouth, but the reverse is true in the case of H. The differences between the two 

 places are however very small, especially in the case of H and N. 



Table XV. gives similar data for the seasonal diurnal inequalities. Corresponding 

 Kew data existed only for D and H. The Kew- Falmouth differences have the same 



TABLE XV. -Relations between Fourier Coefficients in Diurnal Inequalities for the 



Seasons (1891 to 1902). 



sign for all three seasons as for the year ; they are larger, however, in winter than in 

 summer. 



Except in winter the 12-hour and 8-hour terms are decidedly more important 

 relatively to the 24-hour term in D and W than in H and N ; and the 8-hour and 

 the 6-hour terms are relatively more important in H than in N. In all cases the 

 8-hour and 6-hour terms are relatively more important in winter than in summer. 



14. To facilitate comparison of the phase angles at Kew and Falmouth, 



