STROMBOLI 



263 



but are afforded information concerning the Zolfo, Sciarra^ and Torreone 

 vents, the sites of which are visible from the points of view mentioned. 



Figure 14 shows a sketch by Judd^* of an eruption in April, 1874, seen 

 from northeast of the terrace. Here the fumaroles on the east side of 

 the Filo del Zolfo are seen to be active, and just inside the Filo, at the 

 head of the Sciarra, is the Zolfo vent, sketched during an explosion. 



A sketch by Bornemann^^ of the upper end of the Sciarra in 1856, 

 taken from west of the lower end of the Torreone, is shown in Figure 15. 

 The Zolfo, Sciarra, and Torreone vents were present, only the two latter 

 to be seen in the sketch, and the volcano showed little activitv. 





^-// 







Figure 15.— Sketch of Crater Terrace of Stromboli, 1856 (Bornemann) 



It may be pointed out, as confirmatory of the general correctness of the 

 two sketches, figures 14 and 15 (taken from opposite ends of the Sciarra 

 edge), that the point forming the end of the Filo del Zolfo (immediately 

 to the left of the Zolfo vent) in figure 14 is to be seen in the pinnacle of 

 figure 15 ; and also the general outline of the Torreone corresponds in 

 both, though seen from opposite sides. 



A very striking view of the crater terrace in September, 1830, by 

 Bylandt Palsterkamp,^^ is shown in figure 16. This is quite at one with 

 his naive account of the terrifying ascent of Stromboli and the view of 



2* J. W. .Tudd : Volcanoes, New York, 1890, p. 14. A similar view is also publislied by 

 .Tudd in Geol. Mag. (2), vol. ii, 1875. 



2= .T. G. Bornemann : Zs. Deut. Geol. Ges., vol. xiv, taf. x, 1862. 



2" Bylandt Palsterkamp : Theories des Volcans, Paris, 1835, pi. xiv, cf. vol. ii. p. .306. 



