142 Proceedings of the Royal Society 
Along the line of minimum barometer, where it was almost iso- 
barometric, the winds either lulled or fell down to a calm on its 
passage from west to east, both on the 2d and 3d December. On 
the morning of the 2d, calms and light winds prevailed for several 
hours from the north of Scotland to the south of England. The 
winds to the east were shown to have blown from easterly quarters 
obliquely or directly across the isobarometric lines towards the calms 
and line of low barometer — the winds to the west, across the iso- 
barometric lines, also towards the calms and line of low barometer. 
The winds on the west were comparatively cold and dry, raising 
the barometer, while on the east they were relatively moist and 
warm, and attended with rains and falling barometer. 
Over the south and easterly parts of France the winds were 
from southerly quarters up to the line of low barometer, which 
apparently ran nearly north and south at 8 a.m. on the 3d betwixt 
Bochefort and Bordeaux. The winds in the south-east of the line 
were then light, but blowing across the isobarometric lines, but in 
the north strong, where the difference in the pressure on the lati- 
tudes became great. 
The storm of the 2d December travelled rapidly from west to 
east from the north of Scotland to the south of Europe — the baro- 
meters all rising on the passage of the line of low barometer, very 
sharply as far north as Utrecht, Munich, and Vienna; as well as 
at Geneva, Marseilles, and Borne. It reached Borne and Ancona 
at 8 a.m. of 3d, with wind and rain. The self-registering baro- 
meters at Prague and Cracow showed that the rise was only slight 
at both these places. 
During the 2d the barometers continued to fall slowly over Nor- 
way and Sweden. On the morning of the 3d, however, after the 
barometers had again fallen rapidly after midnight over the south 
of Europe, the rise of the barometer was general over the whole of 
Europe. 
The line of low barometer was over Liverpool at 6 a.m. of 3d • 
Oxford at 6.45 ; Nottingham at 7.45 ; Greenwich at 8.12 ; Brussels 
at 11 ; Utrecht at noon; Geneva at 4.20; St Bernard, Marseilles, and 
Munich at 6 ; and Prague at 8. At 9 p m. the barometers from 
Haparanda, at the head of the Gulf of Bothnia, to about 50 miles 
east of Prague, attained their minimum. It passed Vienna at 10, 
