176 Jag gar — YolcanologiG Investigations at Kilauea, 



Fig. 5. 

 a 



Fig. 5. Growth of the crag-mass and uplift of southwest islet, September, 1916. 



(a) Sept. 14, 1916, 10.30 a. m., from S.E. Depression of lake 826 ft. (99 m.), crag-mass 52 ft. 

 (16 m.) above lake. North islet on right attached to crag- mass, lifted suddenly since day before 

 (fig. 3, c). The S.W. islet, shown on the left, was formed on Sept. 5 from a collapsed promontory; 

 it was submerged during a rise Sept. 8; it reappeared again, along witlv rise of neighboring bench, 

 as shown, on Sept. 9. 



(&) Sept. 36, 1916, 3 p. m., from S. Depression of lake 312 ft. (95 m.). N.W. pond with two 

 fountains in background, outward streaming from crusted channel in foreground. Southwest 

 islet now 20 ft. (6 m.) high and rising. Its high walls, now wholly without shore-line markings, 

 due to upthrugt as semi-solid mass through lake bottom shell, here shallow. Photos Jaggar. 



