does, at Barbadoes. But when the belt of rains is
south, and the hurricane comes from the south-east, and is larger and more
violent in its action, and the north-east winds prevail, the first effect
is an increase of these trades. Soon, however, the wind hauls to the north
and north-west, in opposition to its course, bearing the same relation to
it that our east and north-east winds bear to storms in the United States;
and the wind hauls around during the passage of the storm to the west,
south-west, and south-east, and at the latter point it clears off. Mr.
Edwards in his History of Jamaica says--and as a resident, his authority
should be decisive as to this Island--"_that all hurricanes begin from the
north_, veer back to the W. N. W., W., and S. S. W., and when they get
around to the S. E. the foul weather breaks up." Doubtless the same is
true of the class of northers of which we are speaking on the Gulf of
Mexico. _But with this class the barometer does not rise during the gale,
and in proportion to its length and violence._ With the other class of N.
W. winds--the northers of winter--it does.

The following description of two winter northers, copied from Colonel
Reid's valuable work, will illustrate what has been said. _Precisely such
changes from S. E. rains to N. W. winds, with blue sky and detached dark
clouds--fair-weather N. W. scud--occur every autumn in October and
November_, and the falling of the thermometer and rising of the barometer,
after rain, and a change of the wind, are perfectly characteristic.

------------------------------------------------------------------------
1843. | Wind. |Force.|Weather.| Bar.|Ther.|
------------------------------------------------------------------------
Jan. 30.| | | | | |
A.M. 4. |S. S. W. | 2 |b. c. |29.90| 77 |Off Tampico.
Noon. |South. | 5 |b. c. r.|29.86| 76 | {Lat. 23 deg. 41' N.,
P.M. 8. |South. | 6 |b. c. r.|29.84| 76 | {Long. 94 deg. 50' W.
Jan. 31.| | | | | |
A.M. 4. |S. Easterly.| 3 |b. c. |29.90| 74 | {Between 6 and 10
| | | | | | {A.M., wind was
| | | | | | {variable.
Noon. |N. by W. | 9 |c. q. w.|29.96| 76 |Norther commenced at
| | | | | | 10 A. M.
P.M. 8. |N. N. W. | 9 |c. |30.09| 73 |L