WINDS. 355 
over such an immense tract of land,, must ne¬ 
cessarily be dry; and coming from regions 
eternally covered with mounds of snow and 
ice,, it must also be cold. The north-east 
wind, from traversing the frozen seas, must be 
cold likewise; but from passing over such a 
large portion of the watery main afterwards, it 
brings damps and moistures with it. All those 
from the east are damp, and loaded with va¬ 
pours, from the same cause. Southerly winds, 
from crossing the warm regions between the 
tropics, are attended with heat; and the south¬ 
west wind, from passing, like the north-west, 
over a great extent of land, is dry at the same 
time; none however is so dry as that from the 
north-west. It is said, but with what truth I 
cannot take upon me to say, that west of 
the Alleghany and Appalachian mountains, 
which are all in the same range, the south¬ 
west winds are cold and attended with rain. 
Those great extremes of heat and cold, ob¬ 
servable on the eastern side of the mountains, 
are unknown to the westward of them. 
