2.
Ranging across the current of the sea breezes, they are in themselves,
so many successive barriers opposed to their progress. 3. The country
they occupy is covered with trees, which assist to weaken and spend
the force of the breezes. 4. It will remain so covered; a very small
proportion of it being capable of culture. 5. The temperature of its
air, then, will never be softened by culture.
Whether in the plain country between the Mississippi and Allegany
mountains, easterly or westerly winds prevail at present, I am not
informed. I conjecture, however, that they must be westerly: and I
think with you, Sir, that if those mountains were to subside into
plain country, as their opposition to the westerly winds would then be
removed, they would repress more powerfully those from the east, and of
course would remove the line of equilibrium nearer to the sea coast for
the present.
Having had occasion to mention the course of the tropical winds from
east to west, I will add some observations connected with them. They are
known to occasion a strong current in the ocean, in the same direction.
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