On Rain, Evaporation, €¢. 349 
Hertrorpsuire .. Near Ware, 5 years ...... 25 
HuntineponsHire Kimbolton, 7 years ..2..4 25 
DERBYSHIRE «a... Chatsworth, 15 years .... 927, 8 
Rutranpsuire. .. Lyndon, 21 years ........ 24. 3 
NortuampPtonsniRe Near Oundle, 14 years... 23 
General Mean .... 35 2 
ee 
This general mean of 935. 2 inchés is, J ap- 
prehend, a little above the medium for England 
and Wales, as the greater number of places are 
those where much rain falls. If we take a 
mean for each of the above-mentioned counties 
(where more than one place in a county is given) 
and then a general mean from the counties, the 
result is a reduced mean of 31. 3. Even then it 
may be objected that the greater part of the 
counties are maritime; but it must be observed, 
that there is no account of rain in Wales ; and 
we may safely conclude, that the rain in Wales 
would exceed the last-mentioned mean as much 
as the inland counties of England, not in the 
above list, would fall short; because Wales is 
both a mountainous country, and exposed to 
the sea. 
We will, therefore, conclude, that the mean an- 
nual depth of rain in Englandand Wales, deduced 
from these 20 counties, is 31 inches: A quantity ° 
which subsequent obseryations, I am confident, 
