100 Geological Society. 



brada de los Angeles, at a cable and a half or two cables from the 

 shore, is a rock which Ulloa directs to be looked out for with care 

 as it was not visible; at present it is not above 100 fathoms from 

 the shore ; and there is a ripple upon it at all times of the tide. Other 

 rocks near the Cruz de Reyes, which in 1821 were always covered 

 by the sea, are now four feet above the level of hi^h water mark. 



In the port of Coquimbo are three rocks called the Pelicans, which 

 rise twelve feet above low tide; in 1710, according to Feuillee, 

 they were ajleur d'eau. Another rock, about twelve feet long, called 

 the Tortoise, in the time of Frezier and Feuillee, rose five or six feet 

 out of the water ; it is now nine feet above high water mark. 



Mr. Caldcleugh then alludes to the beds of recent shells which 

 rest upon the edges of the sea cliffs from Concepcion to Copiapo, 

 and in consequence of their being found at levels varying from 14 to 

 300 feet, he conceives that the coast has been raised per gradus. 



He next states, in addition to the evidences afforded by Mrs. Cal- 

 cot of the change of level produced by the earthquake of 1822, that 

 persons who escaped on board vessels, remarked that the sen- 

 tries before an old fort on the summit of the hill over the ruins of the 

 town, and previously visible from the feet upwards, had, subsequently 

 to the event, half the body concealed by the fore part of the cliffs*. 

 He also says that the street or causeway, which wound round an old 

 fort, and in 1821 was washed by the sea at every high tide, is now 

 seven feet above the wash of the sea at the high water line of ordi- 

 nary tides. 



In conclusion, Mr. Caldcleugh gave an account of the effects pro- 

 duced by the earthquake of 1835, chiefly from the observations of 

 Capt. Fitzroy, full details of which have been published in the Trans- 

 actions of the Royal Society f and the Royal Geographical Society:}:. 



The President then announced that he had received from the Fo- 

 reign Office the translation of an article published in the South Ame- 

 rican Journal, El Araucano, by Don Mariano Rivero ; but as none 

 except original communications were read before the Society, he 

 could only state that Don Mariano dissents entirely from the belief, 

 that earthquakes have produced vertical changes of level on the coast 

 of Chili. 



This communication was accompanied by a letter from Col. Wal- 

 pole addressed to Lord Palmerston, an extract from which, read by 

 the Secretary, strongly supported Don Mariano Rivero's views. 



A paper entitled "Observations of proofs of recent elevation on 

 the coast of Chili, made during the survey of His Majesty's ship 



* In page 102 a part of the fort previously invisible is stated to have 

 become visible ; but this apparent discrepancy arises from the observations 

 alluded to by Mr. Caldcleugh having been made from the shipping, and 

 those by Mr. Darwin from a point on the land. 



t Mr. Caldcleugh on the Great Earthquake in Chili, 1835. Phil. Trans. 

 1836, p. 21, noticed in Lond and Edinb. Phil. Mag., vol. viii. p. 148. 



t Sketch of the surveying Voyage of His Majesty's Ship Beagle. Journal 

 of the Royal Geographical Society, vol. vi. p. 319. 



