Journal of Geology, Vol. XXV, No. 5 



Plate VI 



a, a view looking a little to the north of east from Puu o Keokeo, showing the flow source. The new 

 rift line, indicated by arrows, traverses the middle ground obliquely. Note the gashed cones; also note 

 the faint streak of fumes, line 3, near the mountain summit, 14-15 miles away — the source of the fume 

 outburst of May 19. Line 1 indicates the larger cone at the chief head of the Honomalino stream. Line 2 

 indicates the largest 1916 cone at the chief head of the Kahuku branches, 



b, a view from an old cone a little N.W. of the head of flow looking about N.E. at the northern portion 

 of the new rift, indicated by short arrows at margin, marked by solfataric action. Note also the streak of 

 fumes, and the light-colored area, at the source of the outbreak of May 19, line 3. 



c, a view looking south toward Puu o Keokeo from the old cone at the head of the new rift. Note the 

 slight curve in the line marked by solfataric action, with new cones beyond; line 1 indicates one of the 

 larger new cones at the chief head of the Honomalino stream, line 5 indicates the small cone at the head of 

 flow, and the lines 4 indicate Puu o Keokeo, 3^ miles away. In the foreground is a freshly riven spur of 

 the old cone. 



d, a view from near the eastern edge of the new flow, looking S.S.W. — a detail of the source near its 

 southern end, showing the cone at the head of the Kahuku branches; line 2, a short tongue of 19 16 lava 

 projecting eastward, and old surface in the foreground. A considerable fall of new, basaltic pumice partly 

 covers both old and new lava here. The lines 4 indicate Puu o Keokeo. 



