CHAP. 42. (42.)—OR UNCERTAIN STATES OF THE WEATHER.
But I would not deny, that there may exist showers and
winds, independent of these causes, since it is certain that
an exhalation proceeds from the earth, which is sometimes
moist, and at other times, in consequence of the vapours,
like dense smoke; and also, that clouds are formed, either
from the fluid rising up on high, or from the air being compressed
into a fluid [Note]. Their density and their substance is
very clearly proved from their intercepting the sun's rays,
which are visible by divers, even in the deepest waters [Note].
