MH eoc 
porry \f th. OY Pe Soe At> oo 
os ‘ * erin See oe 163 
Rare or Pascialineat, —This may be approximately. shoWeeby 
the following estimate of the progress of the storm’s axis,—whieh, : 
so far as known, coincided nearly with the observed minimum of 
the barometer, at the several points of observation. We com- 
_ mence from a point on the axis line opposite to the Cpenango, 
(recital 7,) about 9-30 p. m. on the 4th of October. 
— No.7 to opposite Key West =246 miles in 164 hours ; rate 15 miles per honr. 
. ey West to-let. 279.30! =324-.* 12) « “6 26 Son isha 
© Tat. 27° 30! to lat. 31° IF HF lh ee 
= lat. 31° to lat. 40° Sa peouo tt etl Be = bor id Cah wege 
Tat. 40° to lat. 45° SEROUS OR = St ea ee ae ee 
Previous to the night of the 4th its progress may have been 
slower than the lowest rate here given. 
(1.) We notice that while below the tropic, the rate of pro- 
gression did not exceed that which has been found in several 
of the West Indian hurricanes moving in the same latitudes 
but following a widely different course. (2.) We find that a 
highly rapid, if not unexampled progression was acquired by this 
hurricane while on its course from the tropic to the usual exterior 
~ limit of the trade winds ; in which region the progress of hurri- 
canes has often been comparatively slow. Such former cases of 
retardation I have attempted to explain by the change froma 
westerly to an easterly progression; a change that does not ap- 
pear in the Cuba storm. (3.) We find that the most rapid ad- 
vance of this storm was from the northern border of the trade 
winds to the parallel of 40° or 420 ; this being the region, in 
< which, if I mistake not, the pertoaneit currents of the lower at- 
'__ mosphere are commonly found in their fullest activity. (4.) We 
here ascertain a gradually decreasing rate of progression in the 
latitudes beyond 40°, which has probably occurred in other 
storms, and which, in connexion with other causes, may serve, 
in some degree, to explain or account for the extent and compli- 
cation of the barometric waves. and other meteorological phenom- 
ena in the higher latitudes. 
The average progression of the ston from the Bahamas to lat- 
itnde 45°, may be stated at forty miles per hour. 
So far as is yet known, the most rapid progression has been 
attained by those storms which have pursued the most northerly 
. courses, in their progress from the lower latitudes. The highest 
ae tate previously known, in the American seas, appears to have 
ai 97) 
