OBSERVATIONS ON THE FALL OF RAIN. 183 
then in a swollen state from the rain at the end of 
May, and it was therefore to be expected that a 
large proportion of the water would run off the 
ground. The fall of rain during the time was 
five inches. ‘The quantity of water flowing down 
the river at Dunscar weir, below the Egerton 
works, from a drainage ground of about 5400 
statute acres was measured daily ; the rain ceased 
on the 10th, on which day the stream was flowing 
at the rate of 157 cubic feet per second; on the 
day preceding it had been 250 feet per second ; 
on the 11th it was 27 feet per second, and on the 
12th it had shrunk to its usual volume, which, with 
the assistance of the Belmont reservoir, is from 
12 to 15 feet per second. 
The quantity of rain which had fallen was equal 
to 99,099,000 cubic feet of water—that which ran 
off, including one day after the rain had ceased, 
was upwards of 90,000,000 cubic feet, better than 
9-10ths of the whole. 
During no part of this period was there a heavy 
flood. It is not at all unusual to have a flood 
equal to two, three, or four times the quantity 
which was passing down at that time at its greatest 
height. The rain was continuous rather than 
