We may liken it to a wet sponge, and the decrease of temperature
to the hand that squeezes that sponge. Finally, reaching the cold
latitudes, all the moisture that a dew-point of zero, and even far
below, can extract, is wrung from it; and this air then commences “to
return according to his circuits” as dry atmosphere. And here we can
quote Scripture again: “The north wind driveth away rain.” This is a
meteorological fact of high authority and great importance in the study
of the circulation of the atmosphere.--_Maury._