CHANGES DURING A SOLAR-SPOT PERIOD. 



143 



under south-west winds with that under south and south- 

 east winds we have the following differences : — 



1858 

 1859 

 i860 

 1861 

 1862 

 1863 



4-0-35 



4-075 



4"2'20 

 4-0-85 

 4-0-25 

 — O-3O 



1864 

 1865 

 1866 

 1867 

 l868 



-0-75 



— r8o 



— 2"IO 



-370 



-0-45 



Here we have again a maximum in i860 and a minimum 

 in 1867. 



As the temperature diminished under two winds only 

 (the north-east and south-west), we may compare the 

 means of the temperatures under these winds with those 

 of the wind under which the greatest increase of tempera- 

 ture took place, the south-east, thus : — 



1858 

 1859 

 i860 

 1861 

 1862 

 1863 



-115 



-0-75 

 4-0-05 

 —0-50 

 —0-85 

 — 1 90 



1864 

 1865 

 1866 

 1867 

 1868 



-2-75 

 -4-30 



-3'45 

 -675 



-2-15 



Again we have a maximum in i860 and a minimum in 

 1867; and it is therefore evident that the distribution of 

 temperature under different winds, like that of barometric 

 pressure, is very sensibly influenced by the changes which 

 take place in solar activity. 



Rainfall. 





Mean annual amount. 



Difference. 



5 years 

 (1858-62). 



6 years 

 (1863-68). 



N 



in. 

 316 



3*33 

 2-23 

 2-30 

 770 

 11-51 



473 

 175 



in. 

 2*56 

 2-56 

 2*06 



474 

 1116 



5"47 

 2*37 

 2-23 



in. 

 4-o*6o 



4-0-77 

 4-0-17 

 -2-44 



-3'4 6 

 4-6-04 

 4-2-36 

 -0-48 



N.E 



E 



S.E 



S 



S.W 



W 



N.W 





