142 



MR. J. BAXENDELL ON METEOROLOGICAL 



1858 

 1859 

 i860 

 1861 

 1862 

 1863 



•221 

 •238 

 •231 

 •229 

 •109 



'J34 



1864 

 1865 

 1866 

 1867 

 1868 



•122 

 •083 

 •038 

 •066 



•074 



These numbers indicate a maximum at the end of 1859, 

 a minimum in the latter half of 1866, and a secondary 

 maximum at the end of 1863, thus presenting a very close 

 agreement with the results obtained by De La Rue, Stewart, 

 and Loewy from actual measurements of the areas of the 

 sun-spots observed during the period under discussion. 



The mean pressure under all winds is 29*744 inches in 

 both periods ; but the sum of the differences of the indivi- 

 dual pressures from this mean is 0*755 inch in the first 

 period, and only 0*530 inch in the second. It appears, 

 therefore, that the forces which produce the movements of 

 the atmosphere are more energetic in years of maximum 

 solar activity than in years of minimum. 



Temperature. 





Mean tempera- 

 ture, 5 years 

 (1858-62). 



Mean tempera- 

 ture, 6 years 

 (1862-68). 



Difference. 



N 





 467 

 467 

 48-1 



49'5 

 50-8 

 51-1 

 488 

 46-6 





 468 



4 6 '5 

 5°"4 

 52*2 

 52-3 



5°7 

 48-8 



47"i 







— O'l 



4-o'2 



-*'3 



-27 



-i"5 



4-0-4 



o - o 



-0-5 



N.E 



E 



S.E 



S 



S.W 



W 



N.W 





In the first period the maximum temperature occurs 

 under winds from south-west, and in the second period 

 under winds from about south-south-east. The greatest 

 differences between the two periods occur with east, south- 

 east and south winds. Comparing the mean temperature 



