STROMBOL] 



255 



Figure 3 is a plan by Perret of the conditions after the eruption of 

 1912, as published by de Fiore.^^ It does not differ materially from that 

 of the conditions in April, 1914. 



In figure 4 is reproduced a plan of the vents in May, 1906, by Wegner,^^ 

 which also is the basis of the map of the summit region of Stromboli 

 given by Sieberg,^* who could not see the terrace because of the smoke. 

 Disregarding the surface topographic details and considering only the 

 vents, I is clearly the Zolfo vent (it is called the ^^bocca antiqua" by 

 AVegner) and III is the Torreone. Wegner's II probably is the Sciarra 

 vent, though it is placed higher up and on a line between I and III. 



!l/^ 





'5 f 



h , 



Figure 5, — Plan of Grater Terrace of Stromholi, May, 1904 (Ricco) 



The small vents a, h, c, cl are scarcely more than fumaroles, to judge from 

 their sizes and descriptions, though cl may be the remains of a small vent 

 noted by Eicco in 1904. 



Figure 5 is a rough half sketch and half plan of the vents in May, 

 1904, drawn by D. Vasello and published by Ricco.^^ Here the Torreone 

 and the Filo del Zolfo are seen in perspective, with the vents in plan, the 

 point of view being to the northwest of the Torreone. From the descrip- 

 tion accompanying the not very clear figure it would appear that 2 (near 

 the base of the Filo del Zolfo) is the Zolfo vent, and that 6 (at the end 

 of the Torreone), which was very active, is the Torreone vent; 3 is appar- 

 ently the Sciarra vent; 4 and 4' oljviously occupy the place of my C and 



^ O. de Fiore : Zeits. Vulk., vol. i, 1915, p 



13 T. H. Wegner : Neu. Jb., Cb. 190G, p. 502. 



" A. Sieberg : Erdbel)en-und Vulkankunde Siiditaliens. 



1= A. Ricco : Boll. Soc. Sism. Ital., a-o1. x, 1904, p. 38. 



29, plate Ixx. 



Jena, 1914, p. 195. 



