250 



REPORT — 1878. 



gives well-marked sunspot cycles, and that in all the comparisons both 

 the snnspots and the rainfall have been subjected to exactly the same 

 treatment ; and it might be added that the amonnt of dispersion is much 

 less than it would be in a method in which both the maximum and the 

 minimum years were dispersed over more than one half of the common 

 cycle. 



58. In order, however, to remove such a possible objection, I will, as, 

 far as possible, compare the rainfall with the sunspots, cycle by cycle, 

 from 1823 to 1867. 



Table XXXIV. — Comparison of rainfall with sunspots, from 1823 to 

 1834. — Maximum year (1829) in 7th line. 



The mean for the cycle is 40-0 inches, and for the whole period (1823 

 to 1834), the mean is 39 - 3 inches. 



The rainfall reaches its maximum about two years before the year 

 of maximum sunspots, and its minimum at the time of minimum sun- 

 spots. 



There is, apparently, a tendency to a double oscillation in the 

 rainfall. 



The mean cycle corresponds with the years 1824 to 1833. 



54. The variation for each country is given in the following table. 



Table XXXV.— Rainfall variations from 1824 to 1833. 



