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t"hat of San Angel o I could not perceive 

 one. There are, indeed, many openings 

 and hollows to be feen, which once, per- 

 haps, were fiery mouths ; but none of thefe 

 cavities have at prefent the figure of an 

 inverted tunnel, pofTibly becaufe they have 

 been in part filled up and deftroyed by fub- 

 fequent eruptions, or by time. 



M. Dolomieu obferved at the fummit of 

 this mountain a circular plain, furrounded 

 by eminences fhelving towards the infide, 

 which he imagined might be the remains of 

 an ancient crater. This conjedlure, after a 

 careful examination of the fpot, does not 

 appear to me improbable. The fame natu- 

 ralifl likewife fuppofes that this mountain, 

 the height of which is nearly a mile above 

 the fea, was the firft that was formed in 

 the ifland, through which the volcano burfl 

 forth, and which ferved as a bafe and fup- 

 port for the other mountains that were 

 thrown up afterv/ards. This opinion is 

 extremely plaufible ; but the fad: may like- 

 wife be, in my opinion, that this mountain, 



at 



