184 



OLDER PLIOCENE PERIOD^ 



[Ch. XIV. 



north to south, and about six from east to west. The vents of 

 eruption range entirely within a narrow band running north 

 and south, and the branches which we have represented as 

 extending eastward in the map are formed simply of two lava- 

 streams, those of Castell Follit and Cellent. 



No. 43. 



Volcanic district of Catalonia. 



Dr. Maclure, the American geologist, was the first who made 

 known the existence of these volcanos * ; and, according to his 

 description, the volcanic region extended over twenty square 

 leagues, from Amer to Massanet. I searched in vain in the en- 

 virons of Massanet, in the Pyrenees, for traces of a lava-current ; 

 and I can say with confidence that the adjoined map gives a 

 correct view of the true area of the volcanic action. 



* Macluve.Jouru.de Phys., vol. Ixvi. p. 219, 1808j cited by' Daubeny. De- 

 scription of Volcanos, p. 24. 



