340 E. O. Homy—Eruptions of 1902 of La Soufriere, 



cone of ancient tuff agglomerate alternating with lava beds. 

 Some diametral enlargement has taken place, perhaps, during 

 this eruption, though not enough to change the sky-line of the 

 top to any great degree, except in the southwest side, where 

 the old gash has been greatly widened, and perhaps deepened. 

 The lower part of the outside of this old cone has an angle of 

 slope of 20°, while the upper part is as steep as 30°, according 

 to my determinations. Measurements of the inner slope gave 

 values of 40° to 65° in the portion carved out of the old 

 agglomerate, but the angles increased to 75°, 85°, and even 

 showed great overhanging blocks on the eastern side where 



New 



fragmental 



cone with 



crater in top 



\,. 





\ 



S-VV- 



FiG. 2a. 



V. 



i^iM^S^'C. £«>v-JL Us" -^JUSL^-- 



Basin of 



Lac des Palm- 



istes on slope 



of Morne 



Lacroix. 



yK. 1 



Section across Summit of Mt. Pelee from S.W, to N.E. 

 July 6, 1902. 



Horizontal and vertical scales tlie same. Elevations estimated, except on 

 northeast side. Tlie shape of the crater in the inner cone is entirely infer- 

 ential. The relation of the great southwestern gash to the fragmental cone 

 is indicated by the dotted line. The broken lines complete the profile of the 

 great ancient crater as it existed, probably, before the eruption of May 8, 

 1902. The fragmental cone was the scene of greatest activity, but there 

 seemed to be another important center of eruption in the northeastern por- 

 tion of the crater at the base of Morne Lacroix. 



the old lava beds form the rim. In the western portion of the 

 crater rises a cone of fragmental material, consisting of dust, 

 ashes and large and small blocks and bombs. This cone is the 

 scene of the greatest activity in the crater and it grew materi- 

 ally in size between the day when I first saw it. May 21, and 

 July 6, when I got my last glimpse of it. It now entirely 

 covers the site of the Etang Sec and partly fills the old crater, 

 and probably more than compensates for the material torn and 

 undermined from the old walls and thrown out by the erup- 

 tive action of the volcano. A large proportion of the activity 

 of the volcano, aside from that of the great outbursts, has 

 gone into the building of this cone. The accompanying profile 



