124 



solar spots, as observed by Schwabe and others, was above 

 the average in the five years 1858-62, and below the average 

 in the remaining six years 1854-57 and 1863-64. I there- 

 fore divided the series of rainfall results into two corre- 

 sponding series, and, taking the means of the amounts under 

 each wind, I obtained the following numbers : 



Mean Annual Mean Annual 



Amount of Rainfall, Amount of Rainfall, 



185S-G2. 185i-7 and 1SG3-4. Difference. 



Inches. Inches. Inches. 



N 0-979 1-257 -0-278 



N.W 0-749 2-230 -1-481 



^y 3-798 3-028 +0-770 



S.W 3-059 2-955 +0-104 



S 1-994 1-757 +0-237 



S.E 2-330 2-198 +0-132 



E 1-281 0-830 +0-451 



N.E 0-681 1-613 -0-932 



C 0-605 1-047 -0-442 



The differences in the last column show that the mean 

 amounts of rainfall under west, south-west, south, south- 

 east, and east winds are greater in years of maximum solar 

 spot frequency than in years of minimum, while the amounts 

 under north-east, north, and north-west winds, and calms, 

 are less. Comparing, then, the total amounts which feU under 

 west, south-west, south, south-east, and east winds in each 

 year with those which fell under north-east, north, and north- 

 west winds, and in calms, we have the following results : — 



Total Amounts of 



Rainfall under 

 W.,S.Ay.,S.,S.E., 

 aud E. wiudB. 

 Inches. 



Total Amounts of 



Rainfall under 



N.E., N., & N.W., 



winds and calms. 



Inches. 



1854 8-552 4-026 



1855 8-697 7*030 



1856 10-977 3-979 



1857 6-501 6-245 



1858 8-918 2-735 



1859 14-950 2-180 



1860 12-121 3-566 



1861 15-868 3-294 



1862 10-457 3-292 



1863 11-517 3-609 



1864 18-368 11-816 



Ratios. 



2-03 

 1-23 

 2-75 

 1-04 

 3-22 

 6-86 

 3-39 

 4-76 

 3-17 

 3-19 

 1-55 



CoiTected 

 Ratios. 



2-00 

 1-67 

 2-34 

 3-71 

 4-49 

 5-00 

 3-77 

 3-71 

 2-64 



Groups 



of 

 Solar 

 Spots. 



79 

 34 

 98 

 188 

 205 

 211 

 204 

 160 

 124 



