Observations on Rainfall. 



lOI 



The greatest rate at which rain fell in the period was on the 

 loth July, 1880, when •13 inch fell in 5 minutes, or at the rate 

 of 37-44 inches in 24 hours. An almost equally heavy rainfall 

 occurred on the 29th December, 1880, when -23 inch of rain 

 fell in 10 minutes, or at the rate of 33" 12 inches in 24 hours. 

 The following figures show the number of times when rain has 

 fallen in certain quantities in 24 hours, from March, 1879, to 

 March, 1881 :— 

 Inches. 



13 times. 



46 



30 



15 



21 



9 



ID 



4 



3 



3 



2 



5 



166 



During these periods of heavy rainfall the actual fall of rain 

 was nearest the maximum rate of fall on the 23rd September, 

 1879, when 1-35 inch fell in the day ; the rate of fall to observed 

 fall was, at one period of the day, as 177 to i. When the 

 maximum rate of fall was at the rate of 37-44 in 24 hours, this 

 rate exceeded the observed fall on that day in the proportion 

 of 108-52 to I. Of the 166 observations of heavy falls of rain 

 before alluded to, it may be of interest to note that 86 occurred 

 between midnight and noon, and 80 occurred between noon 

 and midnight. 



