Pr 
Mexican Norther and Bermuda Gale of 
mostly with clear weather, the patoinedae averaging ‘158 in.— 
higher than in the preceding month, 207 in. higher than for the 
succeeding part of October, and ‘212 in. above the annual mean 
of 'T’oronto.* 
But at Bermuda, towards which the storm was moving, the 
average barometrical pressure during the approach of the storm 
from the coast of Mexico, was more than one-tenth inch below its 
annual mean. ‘This shows an inequality of pressure of nearly 
three-tenths of an inch, favoring the route pursued by the storm. 
Remarks and Generalizations. 
I. Our accounts of this storm are more complete for the north- 
ern or left hand side of its axis than on its opposite or southern 
side, till after it had crossed the Gulf Stream. This seems owing, 
in part to the course pursued by the gale, and its relations to the 
common routes of commerce. The less violence of the gale 
‘at Vera Cruz than in t he heart of the Gulf of Mexico, is in con- 
formity with the usual character of the Northers on that coast, 
and with the general fact that storms which pass from elevated 
lands, or even from low countries, do not often act with great force 
at the surface of the ocean, till at a considerable distance from the 
coast ; this being especially the case with that side of the storm 
which exhibits an off-shore wind. 
Il. The rotative character of this gale is well made out by the 
served winds as they appear in the several reports, and especial- 
in those of the Caroline, St. Mary, Mallory, Alabama, Sam- 
son, Betsey Richards, and at Bermuda, as compared consecutive- 
ly, and with other parts of the storm, in the proper relations of 
time and locality. 
* In Sept. 1839, the index readings of my barometer were 4 015 ix in.  Bighae thas 
the mountain barometer (No. 33) taken to the Toronto observatory, by Lieut. 
Riddell, who, while in New York, kindly afforded me an opportunity for compar- 
10 a. m., 2,6 and 10 p. m., unreduced, was 30-113 in.; elevation of cistern between 
my readings have been taken from a point between the summit and line of contact 
of the column, estimated as equal to a level surface. In 1842 my barometer was 
removed to another station, some six feet higher; and the later annual means in- 
duce a suspicion that the index readings may wre cased lessened since that pe- 
riod ; perhaps -O10 or -014 :—but this is by no me rtal 
The corrections sacl in this paper of the ‘nda nce of some ship barome- 
li are the results of rough comparisons made, in this port, with my own barom- 
ae Series, Vol. I, No. 2.—March, 1846. a1 
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