238 



REPORT — 1878. 



The rainfall decreases till the sixth year of the mean cycle, that is, 

 the year before that of minimum sunspots, and then increases to the 

 eleventh year. 



The mean of the mean cycle is 511 m.m., and the mean rainfall from 

 1816 to 1872 is 515 m.m. 



26. As another example of the rainfall variation at a single station on 

 the Continent of Europe, I will take Prague from 1832 to 1867. 



The maximum rainfall coincides with the maximum sunspots. 



The mean rainfall for the mean cycle is 16'5 inches, and 16'6 inches, 

 for the period 1832-67. 



The variation is less regular than at Edinburgh and Paris, but we 

 have only three periods. 



27. The next table shows the converse rainfall variation for Prague. 



On the whole the rainfall decreases to the sixth year of the cycle, and 

 then increases to the eleventh. 



The mean of the mean cycle is 17*5 inches, and the mean rainfall 

 from 1836 to 1861 is 17-4 inches. 



