28 



THE RAINFALL OF OCTOBER. 



I next take the whole of the falls of one inch and above 

 which have occurred in the forty-seven years during any 

 single day. These falls are 120 in number, of which October 

 yields 29 or just under a fourth of the whole. The average of 

 these heavy falls are shown on Table 4 and it will be seen that 

 the average of October is not the greatest by three months : 

 hence October gains its wetness not so much by the heaviness 

 of its rain as by the number of heavy falls. There are five 

 falls of over two inches in a day — of this October contributes 

 three. The heavier days' fall in the whole period was that of 

 the 11th October, 1865, viz., 2*87 in. During this period 

 there has been no month without rain. 



The average for October has been given in Table 2 as 

 4-86 inches. It will no doubt interest the Society to see 

 the variations in this month. The average was exceeded in 

 twenty-two years, viz. : — 



Table 5 























Year. 



Amt. 



Exc'ss 



Year. 



Amt. 



Exc'ss 



Year. 



Amt. 



Exc'ss 



Year. 



Amt. 



Exc'ss 



1843 



6-14 



T28 



1854 



7*00 



214 



1865 



9-05 



4*19 



1880 



10'45 



5-59 



1846 



6-94 



2-08 



1855 



5'99 



1*13 



1870 



5-35 



0-49 



1882 



7*20 



2-34 



1848 



8-59 



3-75 



1857 



5-68 



0-82 



1871 



5*55 



0-69 



1885 



6-21 



135 



1849 



5*59 



0-73 



1859 



6-21 



1-35 



1872 



11-04 



6-18 



1886 



672 



1-86 



1852 



7-45 



2-59 



1862 



6-88 



2-02 



1874 



6*85 



1-99 



1889 



8-75 



389 



1863 



5-21 



0-35 



1875 



6-00 



1-14 















The above table shows three years only, the falls of 

 which have exceeded 1889 ; viz., 1865, 1872 and 1880. 



The average was not reached in twenty-five years, viz. : — 



Table 6. 



Year. 



Amt. 



Deficit 



Year. 



Amt. 



Deficit 



Year. 



Amt. 



Deficit 



Year. 



Amt. 



Deficit 



1844 



3 76 



1.10 



1856 



2-66 



2-20 



1867 



4-29 0-57 



1879 



1-98 



2-98 



1845 



2-02 



2-84 



1857 



1-79 



3-07 



1868 



4-27 



0-59 



1881 



312 



1-74 



1847 



373 



1-13 



1860 



3-25 



1-61 



1869 

 1873 



2-74 

 2-51 



2-12 

 2-35 



1883 



3*53 



1-33 



1850 



4-67 



0-09 



1861 



119 



3-67 



1876 



3-42 



1-44 



1884 



2-19 



2-67 



1851 



4*76 



o-io 



1864 



1.50 



3*36 



1877 



3-66 



1*20 



1887 



2-58 



2-38 



1853 



4-24 



0*42 



1866 



1-29 



3'57 



1878 



3-94 



0-92 



1888 



4-00 



0-86 



The average of wet years is 7 03 in., that of the dry 

 years 3*08 in., the difference being 3-95. 



As a matter of interest I append a table showing the 

 amounts of rain and days of rain for the whole period in 

 each month. This will bring out the difference in a marked 

 way. 



