TRUE VOLCANOES. 275 



of old eruptive basins, which were probably only lateral 

 eruptions on the declivity of one and the same mountain. 



sometimes been caused by the volcano Pichincha, lasted for 43 hours. 

 At a distance of a few feet, firebrands could not be perceived. Respi- 

 ration was obstructed, and a subterranean noise, like the discharge of 

 heavy artillery, was heard not only in Balize on the peninsula of 

 Yucatan, but also upon the coast of Jamaica, and upon the plateau of 

 Bogota", in the latter case at an elevation of more than 8500 feet above 

 the sea, and at a distance of nearly five hundred and sixty geographical 

 miles (Juan Galindo, in Silliman's American Journal, vol. xxviii, 1835, 

 pp. 332336 ; Acosta, Viajes a los Andes, 1849, p. 56, and Squier, 

 vol. ii, pp. 110 113; figures pp. 163 and 165). Darwin (Journal of 

 Researches during the Voyage of the Beagle, 1845, p. 291) calls attention 

 to a remarkable coincidence of phenomena : After a long slumber, 

 Conseguiua, in Central America, and Aconcagua and Corcovado 

 (S. lat. 32f and 43^) in Chili, broke out on the same day (acci- 

 dentally ?). 



Volcano of Conchagua, or of Amalapa, at the north of the entrance 

 to the Bay of Fonseca, opposite to the volcano Conseguina, near the 

 beautiful Puerto de la Union, the harbour of the neighbouring town of 

 San Miguel. 



From the state of Costa Rica to the volcano of Conchagua, there- 

 fore, the close series of twenty volcanoes follows a direction from S.E. to 

 N.W., but on entering near Conchagua into the State of San Salvador 

 which, in the short distance of 160 geog. miles exhibits five still more 

 or less active volcanoes, the line, like the Pacific coast itself, turns more 

 E.S.E. W.N.W., and indeed almost E. W , whilst on the eastern, 

 Caribbean coast (towards the Cape Gracias a" Dios) the land suddenly 

 bulges out in Honduras and los Mosquitos (see above, p. 269). It is 

 only, as tlere remarked, to the north of the high volcanoes of Old 

 Guatemala, towards the Laguua de Atitlan, that the former general 

 direction N. 45 W. again occurs, until at last, in Chiapa, and on the 

 isthmus of Tehuantepec, the abnormal direction E. W. is again mani- 

 fested, but in non-volcanic chains. Besides Conchagua, the following 

 four volcanoes belong to the State of San Salvador : 



The volcano of San Miguel Bosotlan* (lat. 13 35'), near the town of 

 the same name, the most beautiful and regular of trachytic cones 

 next to the insular volcano Ometepec, in the lake of Nicaragua, 

 (Squier, vol. ii, p. 196). The volcanic forces are very active in 

 Bosotlan, in which a great eruption of lava occurred on the 20th of 

 July, 1844. 



Volcano of San Vicente,* to the west of the Rio de Lempa, between 

 the towns of Sacatecoluca and Sacatelepe. A great eniption of ashes 

 took place, according to Juarros, in 1643 ; and in January, 1835, a 

 long continued eruption occurred with destructive earthquakes. 



Volcano of San Salvador (lat. 13 470, near the city of the eame 



T 2 



