( 408 ) 



From llie vet'\ fircumslauce lluil Mr. Aiii/urHc; beheld the new 

 mass IVoin the Sopoetan-crater-i-im, thus from another side tliaii 

 Mr. ScHOCH, these eommiiiiications l)C)rro\v however a certain value 

 as an amplification and confirmation of those of my correspondent. 

 The mass showed itself as in our opinion it must show itself from 

 that elevated point, from all sides turned towards the valley slightly 

 ascending to the rather eccentric mound of crater 4, at the back of 

 which the Sopoetan-tlank pi-ecluded free development, whilst the 

 principal mass moved of course towards the "ThaKveg", so that along- 

 side the Sopoetan-flank a steeper talus and the original irregularities 

 could remain preserved. It is not astonishing that the uppermost 

 part has not been i-ecognized as a crater-cone, if we consider that 

 here — at variance with Roeang — the crater and its stuffing do 

 not differentiate. On the other hand the directions of the current- 

 like extension, indicated on the map by arrows, seem to have been 

 more distinct in the bird's eye view, than they were to Mr. Schoch 

 looking from j)oints in much lower levels. 



It does not appear whether the internal glowing, the egi'ession of 

 vapoui-s and the radiating of heat related to the whole extent of the 

 mass, or whether they were limited to the highest part, and what 

 has led to the opinion that the mass should still be in motion. If 

 this remark is correct, then it seems to me much more likely that 

 a slight "Nachschub" had taken place, a short time before Mr. A.'s visit, 

 and without additional jihenomena observable in the neighbourhood. 



In one respect the communications seem to be at variance with 

 what 1 felt allowed to deduct from those of Mr. Schoch, where 

 Mr. A. speaks of la\a or block-lava and even of a lava-cone, in so 

 far as this, in distinction from cinder, can be taken to signify that 

 the mass has been emerged in a melted slate, and has onl}' after- 

 wards congealed to compact blocks of rock. His further annotation 

 that he has made his observations by a field-glass makes me believe 

 however that by those terms not precisely such a narrower 

 \arietal limitation is meant. So I can find no reason to modify my 

 view, that as at Roeang cineration has been at work, which I 

 regard as real for this kind of erujitions, consisting in the slow so 

 not explosive moving out of solid material in blocks and grit. A 

 real lava-eruption here would be remarkable enough to make us 

 hope, that further information from the Minahassa may soon obviate 

 the risen uncertainty. 



Sopoetan proper has shown no phenomena of increased activity, 

 neither during the phenomena of 1906, and as may be deducted 

 from the quotation till 1909, nor during the so much less impoi'tant 



