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DOVE ON THE LAW OF STORMS. 201 
eurrent; when viewed as occurring simultaneously at several 
places, the south current itself; when viewed locally, a stormy 
passage through the minimum of the wind circle ; or compre- 
hending both views, a whirl or whirlwind advancing in the 
direction of the south current, 7. c. from S.W. to N.E. In con- 
firmation of this view, I subjected the observations collected by 
Brande and others to a new examination, and in a treatise, en- 
titled ‘On Barometric Minima,’ which appeared in Poggendortt’s 
‘Annals’ in 1828, vol. xii. p. 596, I pointed out, that a simple 
explanation of all the phenomena could be afforded, on the as- 
sumption of one or more great rotatory currents, or whirlwinds, 
advancing from $.W. to N.E.; and I remarked at the same time, 
that in all the hurricanes of the southern hemisphere which I 
had examined, the rotatory movement was in the opposite sense 
to that which took place in the northern hemisphere. As the 
example discussed in that paper contained a complete refutation 
of the idea of a flowing in towards a centre, I will here repeat 
the principal quantitative determinations. 
On the 24th December, 1821, at 6 p.m., the barometer stood 
below its average height, as follows :—22 lines at Brest; 19 at 
Helston and Nantes; 17 at Gosport; 163 at Dieppe; 15 in Lon- 
don, Haarlem and Paris; 11 at Strasburg, Geneva and Bremen; 
10 at Zurich, Gottingen and Bergen; 9 at Joyeuse and Augs- 
burg; 8} at Wurzburg; 8 at Regensburg and Leipsic; 7 at 
Prague, Breslau and Christiania; 6} at Cracow, Apenrade and 
Abo; 5 at Turin and Modena; 3} at Florence; 3 at Tilsit and 
Petersburg; 14 at Rome; 1 at Molfetta. 
On the 25th December, at 3 a.m.—22 lines in London; 212 
at Dieppe; 20 at Gosport and Boston; 19 at Helston; 182 at 
Paris; 18 at Haarlem; 18} at Kinfauns Castle; 16} at Stras- 
burg; 15 at Heidelberg; 14 at Cologne, Regensburg and Gét- 
tingen; 13 at Geneva, Zurich, Augsburg, Berlin and Bergen ; 
125 at Joyeuse; 12 at Regensburg, Gotha and Leipsic; 11 at 
Prague and Breslau; 9 at Turin; 8 at Milan and Cracow; is 
\at Christiania; 6 at Abo; 5 at Florence, Rome and Tilsit; 3 at 
Molfetta; 21 at Petersburg. 
On the 25th December, at 10 a.m.—23 lines at Middelburg ; 
21 at Gosport; 203 at Haarlem; 18 at London; 17 at Helston; 
16 at Dieppe, Gottingen and Bremen; 15 in Paris, Strasburg 
and Bergen; 14 at Heidelberg, Gotha and Leipsic; 13 at Zu- 
rich, Augsburg, Vienna, Prague and Breslau; 12} at Joyeuse 
VOL. Ill. PART x, Pp 
