46 Account of the Earthquake in Chili. 
southward, as had been mentioned, while those who resided 
within the circle described, conclude they were produced by ex- 
plosions, perpendicular to the earth’s surface. It does not ap- 
pear that the earthquake extended into the mountains of the An- 
des; no change whatever was observed in any of these mountains, 
except as has been related near Valdivia, and here the voleanie 
ridge is nearer to the sea and less elevated than in any other part 
of Chili. The surface over which, or rather under which, the earth= 
quake extended ashore, cannot be less than 100,000 square miles. 
“‘ During the earthquake the sea, for a considerable distance along 
the coast, receded and returned several times. At Quintero, the 
fishermen who live upon the beach, fled in terror to the sand-hills. 
At Valparaiso, a man-of-war’s boat, going ashore, landed at the 
door of the Custom-house, which is twelve feet above the usual 
high-water mark. Neither the recussion, nor the retrocession of 
the sea, were as violent as might have been expected. 
“Up to the end of September, 1823,the date of the last accounts, 
earthquakes continued to be felt; forty-eight hours seldom passed 
without a shock, and sometimes two or three were felt ving 
twenty-four hours.” 
Arr. VI. On Evaporation. By J. Frederic Daniell, ai 
F.R.S., M.R.L., &c. 
{Communicated by the Author.] 
Tue subject of evaporation has occupied, at various times, much 
of the attention of natural philosophers, and many accurate and 
interesting observations have been recorded of the formation and 
diffusion of elastic fluids, from various kinds of liquids. ‘The cir- 
cumstances, especially, attending the rise and precipitation of aque- 
ous steam in the atmosphere, are acknowledged to be important 
in the highest degree, as upon their silent influence depends the 
adjustment of those important meteorological phenomena, with 
which is connected the welfare of all the organized creation. The 
labours of De Lue, De Saussure, and particularly of Mr. Dalton, 
haye thrown considerable light upon this neyer-ceasing process; but 
