Jaggar — Yolcanologlc Investigations at Kilauea. 175 



Fig. 4. 

 c 



Fig. 4. {c) Telephoto of northern islet Sept. 13, 1916, looking down from 

 N. Depression 320 ft. (99 m.). Same as tiny islet seen as mere dot in 6. Note 

 crust wrinkling, and cracking and foundering blocks in lower left hand 

 corner. Fountain against islet. 



{d) Same viewpoint as a and 6, Feb. 24, 1917, after great crag-mass had 

 passed its maximum. Note main tilt of upraised surface to W.S. W. 

 Depression lake 106 ft. (32 m.) Summit knob identical with island in b. 



