101 
VOLCANO 
OF 
J O R U L L O. 
PLATE XLlir. 
The plate of which I am now about to give an 
explanation recalls to mind one of the most sin- 
gular catastrophes in the physical history of our 
planet. Notwithstanding the frequent commu- 
nications between the two continents^ this catas- 
trophe has remained almost unknown to the 
geologists of Europe. I have already given a 
description of it in my political Essay on the 
Kingdom of New Spain 
The volcano of Jorullo is situate, according to 
my observations, in latitude 19° 9', longitude 
103° 51' 48", in the intendency of Valladolid, to the 
west of the city of Mexico, and thirty-six leagues 
distant fromtheocean. Itis513metres (263toises) 
* Tom. 1, p. 248. See also my Golleetion oF Aetr. Olis. 
t. 1, p. 327, & tom. 2, p, 521. 
