Vegetable Staticks . j j 
fair rummer* s day from the fame furface, be- 
ing i ounce -|- 282 grains, gives ~ part of 
an inch depth for evaporation, which is 
four times as much as fell at night. 
I found, by the fame means, the evapo- 
ration of a winters day to be nearly the 
fame as in a fummer’s day 5 for the earth 
being in winter more faturate with moi- 
dure, that excels of moidure anfwers to the 
excefs of heat in fummer. 
Nic. Cruquius, N° 381. of the Philofo 
phical Tranfadions, found that 28 inches 
depth evaporated in a whole year from wa» 
ter, /. e. tt of an inch each day, at a mean 
rate; but the earth in a dimmer’s day evapo- 
rates — of an inch; fo the evaporation of 
a furface of water, is to the evaporation of 
a furface of earth in fummer, as 10:3. 
The quantity of Rain which falls in a 
year is at a medium 22 inches: The quan- 
tity of the earth’s evaporation in a year is 
at lead 9 - 4 - -b inches, fince that is the rate, 
at which it evaporates in a fummer’s day: 
From which 9 -j- X inches is to be deduct- 
ed 3.39 inches for circulating daily Dew; 
there remains 6 . 1 inches, which 6 . 2 inches 
deduded from the quantity of Rain which 
falls in a year, there remains at lead 1 inches 
E 4 depth. 
