Atmosphere and the Earth. 



U\ 



Mean of the three Winter months, ) 

 Dec. Jan. Feb., / 



Spring months, . . 



Summer months, 



Autumn months. 



The mean temperatures of the months of April and October 

 of 1817 and 1820 were— 



Mean of all the four April observations 

 October do., . . 



38°.88. 

 33 .37. 



Hence the most probable mean temperature of the atmosphere 

 at Slatoust + 33°.35. 



From the above table is the mean of the temperatures of all 

 the months of the years 1818 and 1819 also = 33°.35. 



JANUARY— MARCH 1830. 



