ON “QUIET” DAYS DURING THE ELEVEN YEARS 1890 TO 1900, ETC 407 
to the fact that the Kew data are from quiet days only, while the Greenwich data are 
from all days. 
Tables XXXVII. and XXXYIII. are derived from the sa^ne data as Tables XXXV. 
and XXXVI., but they are intended to show the influence of sun-spot frequency on 
the relative importance of the different Fourier terms. 
Table XXXVII. deals only with the mean diurnal inequality for the whole year 
but gives data for W and N as well as for D and H. 
Table XXXVIII. gives seasonal values of the ratios, but for D and IT only.— 
(See p. 412.) 
