TABLE I. Monthly and annual barometric pressure at Oronn, 

 Me., reduced to sea level and standard gravity. 



January. 



7 a. 



2 p. 



9 p. 



Mn 



7 a. 



February. 



2p. 



9 p. 



Mn 



March. 



2 P. 



9 p. 



Mn 



7 a. 



April. 



2p. 



9p. 



Mn 



79 



80 



90 



1870 

 1871 

 1872 

 1873 

 1874 



1875 

 1876 

 1877 

 1878 

 1879 



1881 



1882 

 1883 

 1884 



1885 

 1886 

 18S7 

 1888 



1890 

 1891 



1894 



1895 

 1896 

 1897 



1898 

 1899 



91 



87 



9C 



74 



92 



87 



95 



Mean 91 87 



89 



73 



73 



76 



77 



85 



70 



70 



91 



68 



512 



91 



77 74 

 76 ' 71 

 85 80 

 75 71 



si) 



77 



91 



89 



