Dear Sir, I send you, at your request, some extracts from my Journal concerning the great earthquakes which visited Chili during my residence in that country in 1822–3. The first shock, by which the towns of Valparaiso, Melipilla, Quillota, and Casa Blanca were almost destroyed, and Santiago much damaged, was felt at 1/4 past 10 o’clock in the evening of Tuesday the 19th of November 1822. It lasted 3 minutes. I was then residing about a mile from the coast at Quintero, situated on a promontory about 30 miles to the north of Valparaiso. It was a very still and clear moonlight night; the aurora australis had been visible, and some lightning had been seen over the Andes. In a few minutes after the first shock, there was another less severe; and from that time, the whole night long successive shocks were felt, twice in every five minutes, each lasting from 1/2 to 1 minute. On the morning of the 20th, a little before 2, at 4, and at 1/4 before 6 o’clock there were three violent shocks, and the earth continued trembling in the intervals. This day was hot and sunny, with wind; the night was clear and windy. On the morning of the 21st, at 1/2 past 2, at 10 minutes before 3, at 1/4 before 8, at 1/4 past 9, and at 1/2 past 10; and in the afternoon at 1/4 past 1, and at 2, violent shocks were felt, The weather of this day was