218 Washington — Catalan Volcanoes and their Mocks. 



quarters were made at both Gerona and Olot, from which 

 a considerable number of the cones and lava flows were visited, 

 especial attention being paid to those near Olot. Not much 

 stress was laid upon the general geology, the tectonics, and the 

 stratigraphy, as these were beyond the main scope of the in- 

 vestigation, and will be fully covered by the forthcoming 

 report of the commission referred to above. At the same time, 



Sketch Map of the Catalan Volcanoes 

 1 : 400,000 



a short sketch of the main physical and topographical features 

 of the volcanoes themselves will be given here, as they are but 

 little known in this country and the descriptions may be of 

 interest. 



Study of the region is somewhat hampered by the want of 

 an accurate and detailed map, a need which the Spanish Com- 

 mission purposes to fill. The only map available was one of- 

 the Province of Gerona by Marti and Marino, on a scale of 

 1 : 200,000, and published at Barcelona by Barral Hermanos in 

 1900. No contour lines or other physiographic features, 

 except the hydrography, are presented in this, even the volca- 



