Sun-spot Areas and Diurnal Temperature-Ranges. 309 



whether they are real or only apparent Inequalities, it may be inte- 

 resting to exhibit in Table IV (p. 308) the largest solar Inequality 

 with which we have as yet come into contact. The figures given 

 represent the sums of twelve yearly Inequalities, the whole 36 

 years being split into three series of 12 years each. The amount 

 of repetition will be seen from a comparison of these three 

 series, which are exhibited, first, without any equalisation, and 

 secondly, with the same amount of equalisation which has been 

 applied to the terrestrial Inequalities around 26 days (Art. 12). 



19. Comparison in Length of Period. The comparative magnitudes 

 of the various solar Inequalities around 26 days are estimated after 

 the manner already described that is to say, by adding together 

 the various yearly results appropriately placed, and then in the final 

 Inequality so obtained summing up the various (26) departures, 

 whether positive or negative. 



The two right hand figures are dismissed both for celestial and 



Table V. Apparent Inequalities around 26 Days. 



(The numbers in this table represent the aggregate Inequalities for 

 36 years in the sun-spots and Toronto temperature -ranges, and for 

 24 years in the Kew temperature-ranges, the whole being divided by 

 100.) 



