STROM BOLI 



253 



Earlier in 1914 Stromboli was visited by 0. de Fiore, who, with three 

 compamons, succeeded in descending to and going over the terrace itself.^ 

 The sketch map he gives on his plate LXX is reproduced in figure 2. 

 From this and his brief preliminary description it is clear that his num- 

 ber 4 is my B, the Torreone vent. His subsidiary vent 4a, which was 

 quiet in April, would seem to have filled up by August. It is reasonable 

 to believe that his number 5 corresponds to my D, and his 6 and 7 to 

 have coalesced to form my C, which, as was stated in the previous paper, 

 was larger and later than D. His 5, 6, and 7 would thus be in the gen- 

 eral location of the Central vents. His number 1 was probably in the 

 neighborhood of my E, 

 the Fumarole vent, but 

 this part of the terrace 

 appears to have been 

 much filled up between 

 April and August, prob- 

 ably largely by ejecta 

 from the Zolf o vent, his 

 number 2, which re- 

 sumed activity after his 

 visit. His number 3, 

 between the Zolfo and 

 Torreone vents and a 

 little Avay down the Sciarra, was not active or visible in August, but was 

 violently so in 1915. Following Ponte, this will be called the Sciarra vent. 



The great eruption of July-Xovember, 1915, has been described by 

 F. A. Ferret in a paper recently published. ^^ The condition after the 

 eruption, in December, 1915, has been described by G. Ponte in a pre- 

 liminary note,^^ with a photograph of a plaster model of the summit of 

 Stromboli. The Zolfo, Torreone, and Sciarra vents were active, the last 

 being the source of lava flows, and there was also a vent (Ponte's D) in 

 the vicinity of my E, the Fumarole vent. 



Having thus obtained an idea of the conditions in 1914, as a starting 

 point, we may first consider the more recent maps and sketches, which are 

 reproduced in figures 1 to 13. In comparing these it must be borne in 

 mind that none of the plans was based on an instrumental survey, but 

 that they were all free-hand sketches; also the oblique perspective, the 

 generally very irregular surface of the terrace, and sometimes the abun- 



FlGDRE 



-Plan of the Crater Terrace of Strom'boU, 

 April, 191Jt (de Fiore) 



8 O. de Fiore : Zeits. Vulk., vol. i, 1915, p. 238, and plate Ixx. 

 10 F. A. Perret: Am. .Tour. Scl., vol. xlii, 1916, p. 443. 

 ^G. Ponte: Rend. Ace. Line. (5), vol. xxv, 1916, p. 373. 



