ae 
166 Phenomena of the Cuba Hurricane. 
of 15 miles for the first 26 hours, and of 32 miles for the last 22 
hours, we have 1094 miles for this diameter. The like estimate 
applied to the observations on board the Demarara, (45b,) with 
the increased rates of advance, and deducting the vessel’s progress, 
will give a result fully equal to the foregoing. These conclu- 
sions may be sustained, also, by a like reference to the recitals 
mentioned below.* 
These results cannot be invalidated by the reports which are 
less determinate, nor by those which refer only, or chiefly, to the 
more violent portion of the gale. They are satisfactorily tested 
by the fact that the daily advance of the gale, which from lat, 
27° to 42° was equal to 1032 miles per day, does not, in all ca- 
ses, afford space on the chart sufficient for the separate daily de- 
lineation of all the observations of the earliest and latest wind of 
the storm. 
We may hence conclude that the entire extent of. the gale on 
its line of progress was somewhat greater than its lateral diame- 
ter; unless we admit that, on its southeastern border, the gale 
was extended much beyond our points of observation on that 
side. Its limitation on the left or continental side, owing prob- 
ably to the obstructions and elevations of the surface and the 
pressure of the natural currents from the western board, is more 
distinctly determined. 
The Naa of the violent portion of the sles 5 in the direc- 
tion of its progress, does not appear to have been less than in the 
transverse direction.+ 
Revoivine Cuaracrer or THe Storm-Winp.—As regards the 
general manner in which the wind was exhibited in this case, aS 
well as in other great storms, I can find no ground for the sup- 
port of opposite or dissimilar conclusions. 
On a general review of the observations, the following state of 
facts is presented to our notice. (1.) In the early part or front 
of the storm, on its centre path, we find the wind to have blown 
from the southeastern quarter, transversely from the right towards 
the left side of the path. Continuing to follow this wind in its 
course, as we depart froni the axis path the observations show it 
to proceed. Successively from more eastern and northeastern points, 
* Nos. 72, 86, 100, 118, 121, 123, 129, 130, 141, 142, 144, 
se mies on an examination ded == cates in cases 35, 38, 64, 
ae si ee > 
