. = = # ‘ ae 
Proceedings of the British Association. ; 327. 
neva, six inches of rain in three hours. At Perth, Aug. 3d, 1829, 
there fell 4-5ths of an inch in half an hour. Don Antonio Lago 
observed at San Luis, Maranham (23° 8. lat.) a fall of 23 feet 4 
inches 9.7 lines in a year. 
Mr. Espy’s paper on Storms, which excited much attention, 
was appointed for half past twelve o’clock, (Sept. 19,) and that 
hour having now arrived, the President walled on Mr. Espy, who 
commenced by stating that he had found by examining simulta- 
neous observations in the middle of storms, and all round their 
borders, that the wind blows inward on all sides of a storm to- 
wards its central parts; towards a point if the storm is round, and 
towards a line, if the storm is oblong, extending through its long- 
_ est diameter. Mr. Espy stated that he had been able to investi- 
gate within the last five years seventeen storms, without discov- 
ering one exception to the general rule. He could now only give — 
a specimen of the manner in which he had proceeded. He pre- 
sented a map of Great Britain, on which were drawn arrows rep- 
resenting the course of the wind on the night of January 6th, 
1839. From this and from documents which Mr. Espy pro- 
ceeded to read, it appeared that during those hours the wind was 
blowing a jokers gale on the northwestern part of the island 
from the N. W.; on the southwestern parts from the S. W., and 
on the scuabineabe parts a strong gale from the S. E. and 8.8. E.; 
and that in the middle parts of the island it changed from south. 
easterly to southwesterly about those same hours :—the change 
taking place about two hours sooner on the west side of the isl- 
and than on the east side in the central parts, but much sooner in 
the northern parts than in the southern. The barometer also fell 
sooner in the northern and western parts than in the southern 
and eastern. From these two circumstances he thinks it highly 
probable, that this storm moved not exactly toward the east, but 
alittle south of east, and if so, it would be similar to some storms 
which he had examined in the United States. He mentioned 
one in particular, which occurred January 26, 1839, whose N. N. E. 
and §.S. W. diameter reached at least seven hundred miles, 
while its diameter from W. N. W. to’E. 8. E: was probably not 
-More than 300. The south border of this storm certainly trav- 
elled towards the south of east, and Mr. Espy found that in this 
storm, as in many others, the barometer fell sooner to the north 
and west than to the south and east. A much greater difference 
