C 3^0 ] 
('hirnfii:?, niul another upon the grouiid of tlic gar- 
(ien belonging to the fame houle, and there 
iound thiC fame difference between thd'e two, 
though placed lb near one another, which there 
had been between them, when placed at fimilar 
heights in different parts of the town. After this 
fadt was fufhciently afeertained, it was thought pro- 
per to try, whether the difference would be greater at 
a much greater height ; and a rain-gage was there- 
fore placed upon the fquarc part of the roof of 
Wedminfler Abbey, being at fuch a diftance from 
the weftern towers, as probably to be very little af- 
fedted by them, and being much higher than any 
other neighbouring buildings. Here the quantity of 
rain was obferved for a twelvemonth, the rain being 
ineafured at the end of every month, and care being 
taken, that none ffould evaporate, by pafling a very 
long tube of the funnel into a bottle through a cork, 
to which it was exadly fitted. The tube went 
down very near to the bottom of the bottle, and 
therefore the rain, which fell into it, would foon 
rife above the end of the tube, fo that the water 
was no where open to the air except for the fmall 
rpace of the area of the tube : and by trial it 
was found, that there was no fenfible evaporation 
through the tube thus fitted up. 
The following table will ffew the refult of thefc 
obfervations. 
From 
