184 



ILLINOIS STATE ACADEMY OF. SCIENCE 



Average monthly precipitation in winter 1.3 — 2.0 inches 

 do in spring 2.7 — 3.3 



do in summer 3.3 — 4.0 



do in autumn 2.7 



PRECIPITATION 



YEAR 



1850. 

 1851. 

 1852. 

 1853. 

 1854. 

 1855. 

 1856. 

 1857. 

 1858. 

 1859. 

 1860. 

 1861. 

 1862. 

 1863, 

 1864, 

 1865, 

 1866. 

 1867, 

 1868, 

 1869 

 1870 

 1871 

 1872 

 1873 

 1874 

 1875 

 1876 

 1877 

 1878 

 1879 

 1880 

 1881 

 1882 

 1883 

 1884 

 1885 

 1886 

 1887 

 1888 

 1889 

 1890 

 1891 

 1892 

 1893 

 1894 

 1895 



