( 400 ) 



condition were ejected to a lieic^ht of about 300 M. and in falling- 

 back had been piled up to a wall around the hole, which on the 

 21*f of June was already about 300 M. wide and 10 M. high. 



In July to September the place was occasionally visited by Dr. theol. 

 S. ScHOCH, then curate of Sonder. An account of one of these visits, 

 inserted in the weekly paper Tjehaja-Sijanu- of Sept. 15 1906, published 

 at Menado in the Malay language, and information kindly forwarded 

 by Dr. Schoch, enable me to complete those reports, though all the 

 circumstances are not yet cleared uj). 



The atrio of the old Rindengan-volcano to the north of the Sopoetan- 

 cone was again the scene of the phenomena, but whilst in 1901 

 the activity showed itself at the abrupt end of the formerly (First 

 part p. 230) mentioned hill-range iri-adiating from Sopoetan just 

 where this range is breaking olf at the Pen toe, it occurred now in 

 the upward part of the atrio cut olf by this spur into a separate 

 basin. Tnei-e two new scoria- or cinder-cones have ai-isen surrounded 

 by a tield of blocks, all sketched on the maj» in the first {)arl of 

 these notes (Proceedings of the meeting of June 24 j». 222) from 

 the indications of Mr. Schoch. The height of the uorth-westei-n cone, 

 indicated on the map l)y 4, above the level of the valley is estimated 

 at about '/, of that of Sopoetan, i.e. at about 150 M., that of the 

 south-eastern cone at 40 M. and that of the edge of the block-tield 

 to the side of the Ketcng 'u-wall at ±: 15 M. Nearer to the cone the 

 block-stream was much thicker. Among the single scoria-tlakes some 

 were seen of dimensions of more than two fathoms (3.5 M.). 



In the beginning of June there was not a vestige of this entire 

 mass of grit and stone-, which may safely be valued at a volume 

 of more than ten million cubic meters. It has emerged in the second 

 half of June and in July, and has gradually moved oji "in the 

 shape of a wide black and red stream" in the direction of the 

 solfatare of 1901 ^), which it had reached already at the time of 

 Dr. Schoch's tirst visit in the middL^ of June. Since that time it 

 seems to have come to a stand-still, so that the solfatare itself has not 

 been covered over. On 18''' of August Mr. Schoch stood there against 

 "the high separate mass", but the stones were then still so hot and 

 steamed so vehemently that he had to abandon every idea of scaling 

 the talus. Not before September he succeeded iji doing so, "after a 

 troublesome ascent, because the stones lav so loose". On the surface 



^) •'. . . .laloe disoiong dengau gagah ka s;abelah barat laoet sampai kepada 

 „kawah jang meletoes pada tahon 19U1, maka roepauja soeatoe koeala hitani 

 ,dan merah amal lebar jang kebatoe l)at()ean didjalannja". Dr. Sciiocii in Tjeliaja- 

 Sijang I.e. 



